diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 465cf2a5..cd17230d 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -36,7 +36,7 @@ jobs:
         include:
           - target-triple: x86_64-unknown-linux-gnu
             host-triple: x86_64-unknown-linux-gnu
-            features: [sqlite,mysql,postgresql] # Remember to update the `cargo test` to match the amount of features
+            features: [sqlite,mysql,postgresql,enable_mimalloc] # Remember to update the `cargo test` to match the amount of features
             channel: stable
             os: ubuntu-20.04
             ext: ""
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index f18ddbf1..248e0f18 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -25,7 +25,7 @@ repos:
       description: Test the package for errors.
       entry: cargo test
       language: system
-      args: ["--features", "sqlite,mysql,postgresql", "--"]
+      args: ["--features", "sqlite,mysql,postgresql,enable_mimalloc", "--"]
       types: [rust]
       pass_filenames: false
     - id: cargo-clippy
@@ -33,6 +33,6 @@ repos:
       description: Lint Rust sources
       entry: cargo clippy
       language: system
-      args: ["--features", "sqlite,mysql,postgresql", "--", "-D", "warnings"]
+      args: ["--features", "sqlite,mysql,postgresql,enable_mimalloc", "--", "-D", "warnings"]
       types: [rust]
       pass_filenames: false
diff --git a/Cargo.lock b/Cargo.lock
index a8b21b91..526b4a34 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -101,9 +101,9 @@ dependencies = [
 
 [[package]]
 name = "async-stream"
-version = "0.3.2"
+version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "171374e7e3b2504e0e5236e3b59260560f9fe94bfe9ac39ba5e4e929c5590625"
+checksum = "dad5c83079eae9969be7fadefe640a1c566901f05ff91ab221de4b6f68d9507e"
 dependencies = [
  "async-stream-impl",
  "futures-core",
@@ -111,9 +111,9 @@ dependencies = [
 
 [[package]]
 name = "async-stream-impl"
-version = "0.3.2"
+version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "648ed8c8d2ce5409ccd57453d9d1b214b342a0d69376a6feda1fd6cae3299308"
+checksum = "10f203db73a71dfa2fb6dd22763990fa26f3d2625a6da2da900d23b87d26be27"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -480,9 +480,9 @@ checksum = "5827cebf4670468b8772dd191856768aedcb1b0278a04f989f7766351917b9dc"
 
 [[package]]
 name = "cpufeatures"
-version = "0.2.1"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95059428f66df56b63431fdb4e1947ed2190586af5c5a8a8b71122bdf5a7f469"
+checksum = "59a6001667ab124aebae2a495118e11d30984c3a653e99d86d58971708cf5e4b"
 dependencies = [
  "libc",
 ]
@@ -509,9 +509,9 @@ dependencies = [
 
 [[package]]
 name = "crossbeam-utils"
-version = "0.8.7"
+version = "0.8.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b5e5bed1f1c269533fa816a0a5492b3545209a205ca1a54842be180eb63a16a6"
+checksum = "0bf124c720b7686e3c2663cf54062ab0f68a88af2fb6a030e87e30bf721fcb38"
 dependencies = [
  "cfg-if 1.0.0",
  "lazy_static",
@@ -603,9 +603,9 @@ dependencies = [
 
 [[package]]
 name = "dashmap"
-version = "5.1.0"
+version = "5.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c0834a35a3fce649144119e18da2a4d8ed12ef3862f47183fd46f625d072d96c"
+checksum = "4c8858831f7781322e539ea39e72449c46b059638250c14344fec8d0aa6e539c"
 dependencies = [
  "cfg-if 1.0.0",
  "num_cpus",
@@ -727,6 +727,26 @@ dependencies = [
  "subtle",
 ]
 
+[[package]]
+name = "dirs"
+version = "4.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ca3aa72a6f96ea37bbc5aa912f6788242832f75369bdfdadcb0e38423f100059"
+dependencies = [
+ "dirs-sys",
+]
+
+[[package]]
+name = "dirs-sys"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1b1d1d91c932ef41c0f2663aa8b0ca0342d444d842c06914aa0a7e352d0bada6"
+dependencies = [
+ "libc",
+ "redox_users",
+ "winapi 0.3.9",
+]
+
 [[package]]
 name = "discard"
 version = "1.0.4"
@@ -734,10 +754,13 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "212d0f5754cb6769937f4501cc0e67f4f4483c8d2c3e1e922ee9edbe4ab4c7c0"
 
 [[package]]
-name = "dotenv"
-version = "0.15.0"
+name = "dotenvy"
+version = "0.15.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "77c90badedccf4105eca100756a0b1289e191f6fcbdadd3cee1d2f614f97da8f"
+checksum = "7e851a83c30366fd01d75b913588e95e74a1705c1ecc5d58b1f8e1a6d556525f"
+dependencies = [
+ "dirs",
+]
 
 [[package]]
 name = "either"
@@ -1424,7 +1447,7 @@ dependencies = [
  "idna 0.2.3",
  "mime",
  "native-tls",
- "nom 7.1.0",
+ "nom 7.1.1",
  "once_cell",
  "quoted_printable",
  "regex",
@@ -1434,9 +1457,18 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.119"
+version = "0.2.121"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1bf2e165bb3457c8e098ea76f3e3bc9db55f87aa90d52d0e6be741470916aaa4"
+checksum = "efaa7b300f3b5fe8eb6bf21ce3895e1751d9665086af2d64b42f19701015ff4f"
+
+[[package]]
+name = "libmimalloc-sys"
+version = "0.1.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7705fc40f6ed493f73584abbb324e74f96b358ff60dfe5659a0f8fc12c590a69"
+dependencies = [
+ "cc",
+]
 
 [[package]]
 name = "libsqlite3-sys"
@@ -1575,6 +1607,15 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "mimalloc"
+version = "0.1.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b0dfa131390c2f6bdb3242f65ff271fcdaca5ff7b6c08f28398be7f2280e3926"
+dependencies = [
+ "libmimalloc-sys",
+]
+
 [[package]]
 name = "mime"
 version = "0.3.16"
@@ -1618,14 +1659,15 @@ dependencies = [
 
 [[package]]
 name = "mio"
-version = "0.8.0"
+version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ba272f85fa0b41fc91872be579b3bbe0f56b792aa361a380eb669469f68dafb2"
+checksum = "52da4364ffb0e4fe33a9841a98a3f3014fb964045ce4f7a45a398243c8d6b0c9"
 dependencies = [
  "libc",
  "log",
  "miow 0.3.7",
  "ntapi",
+ "wasi 0.11.0+wasi-snapshot-preview1",
  "winapi 0.3.9",
 ]
 
@@ -1751,13 +1793,12 @@ dependencies = [
 
 [[package]]
 name = "nom"
-version = "7.1.0"
+version = "7.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1b1d11e1ef389c76fe5b81bcaf2ea32cf88b62bc494e19f493d0b30e7a930109"
+checksum = "a8903e5a29a317527874d0402f867152a3d21c908bb0b933e416c65e301d4c36"
 dependencies = [
  "memchr",
  "minimal-lexical",
- "version_check",
 ]
 
 [[package]]
@@ -1828,9 +1869,9 @@ dependencies = [
 
 [[package]]
 name = "num_threads"
-version = "0.1.3"
+version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "97ba99ba6393e2c3734791401b66902d981cb03bf190af674ca69949b6d5fb15"
+checksum = "aba1801fb138d8e85e11d0fc70baf4fe1cdfffda7c6cd34a854905df588e5ed0"
 dependencies = [
  "libc",
 ]
@@ -1884,9 +1925,9 @@ checksum = "ff011a302c396a5197692431fc1948019154afc178baf7d8e37367442a4601cf"
 
 [[package]]
 name = "openssl-src"
-version = "111.17.0+1.1.1m"
+version = "111.18.0+1.1.1n"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "05d6a336abd10814198f66e2a91ccd7336611f30334119ca8ce300536666fcf4"
+checksum = "7897a926e1e8d00219127dc020130eca4292e5ca666dd592480d72c3eca2ff6c"
 dependencies = [
  "cc",
 ]
@@ -2279,9 +2320,9 @@ dependencies = [
 
 [[package]]
 name = "quote"
-version = "1.0.15"
+version = "1.0.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "864d3e96a899863136fc6e99f3d7cae289dafe43bf2c5ac19b70df7210c0a145"
+checksum = "b4af2ec4714533fcdf07e886f17025ace8b997b9ce51204ee69b6da831c3da57"
 dependencies = [
  "proc-macro2",
 ]
@@ -2404,9 +2445,9 @@ dependencies = [
 
 [[package]]
 name = "raw-cpuid"
-version = "10.2.0"
+version = "10.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "929f54e29691d4e6a9cc558479de70db7aa3d98cd6fe7ab86d7507aa2886b9d2"
+checksum = "738bc47119e3eeccc7e94c4a506901aea5e7b4944ecd0829cbebf4af04ceda12"
 dependencies = [
  "bitflags",
 ]
@@ -2429,6 +2470,17 @@ dependencies = [
  "bitflags",
 ]
 
+[[package]]
+name = "redox_users"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7776223e2696f1aa4c6b0170e83212f47296a00424305117d013dfe86fb0fe55"
+dependencies = [
+ "getrandom 0.2.5",
+ "redox_syscall",
+ "thiserror",
+]
+
 [[package]]
 name = "ref-cast"
 version = "1.0.6"
@@ -2486,9 +2538,9 @@ dependencies = [
 
 [[package]]
 name = "reqwest"
-version = "0.11.9"
+version = "0.11.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "87f242f1488a539a79bac6dbe7c8609ae43b7914b7736210f239a37cccb32525"
+checksum = "46a1f7aa4f35e5e8b4160449f51afc758f0ce6454315a9fa7d0d113e958c41eb"
 dependencies = [
  "async-compression",
  "base64 0.13.0",
@@ -2524,7 +2576,7 @@ dependencies = [
  "wasm-bindgen",
  "wasm-bindgen-futures",
  "web-sys",
- "winreg 0.7.0",
+ "winreg 0.10.1",
 ]
 
 [[package]]
@@ -3092,9 +3144,9 @@ checksum = "6bdef32e8150c2a081110b42772ffe7d7c9032b606bc226c8260fd97e0976601"
 
 [[package]]
 name = "syn"
-version = "1.0.86"
+version = "1.0.89"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a65b3f4ffa0092e9887669db0eae07941f023991ab58ea44da8fe8e2d511c6b"
+checksum = "ea297be220d52398dcc07ce15a209fce436d361735ac1db700cab3b6cdfb9f54"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -3256,7 +3308,7 @@ dependencies = [
  "bytes 1.1.0",
  "libc",
  "memchr",
- "mio 0.8.0",
+ "mio 0.8.2",
  "num_cpus",
  "once_cell",
  "parking_lot 0.12.0",
@@ -3290,9 +3342,9 @@ dependencies = [
 
 [[package]]
 name = "tokio-rustls"
-version = "0.23.2"
+version = "0.23.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a27d5f2b839802bd8267fa19b0530f5a08b9c08cd417976be2a65d130fe1c11b"
+checksum = "4151fda0cf2798550ad0b34bcfc9b9dcc2a9d2471c895c68f3a8818e54f2389e"
 dependencies = [
  "rustls",
  "tokio",
@@ -3632,7 +3684,7 @@ dependencies = [
  "data-url",
  "diesel",
  "diesel_migrations",
- "dotenv",
+ "dotenvy",
  "fern",
  "futures",
  "governor",
@@ -3644,6 +3696,7 @@ dependencies = [
  "lettre",
  "libsqlite3-sys",
  "log",
+ "mimalloc",
  "num-derive",
  "num-traits",
  "once_cell",
@@ -3717,6 +3770,12 @@ version = "0.10.2+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
 
+[[package]]
+name = "wasi"
+version = "0.11.0+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
+
 [[package]]
 name = "wasm-bindgen"
 version = "0.2.79"
@@ -3800,7 +3859,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "90b266eccb4b32595876f5c73ea443b0516da0b1df72ca07bc08ed9ba7f96ec1"
 dependencies = [
  "base64 0.13.0",
- "nom 7.1.0",
+ "nom 7.1.1",
  "openssl",
  "rand 0.8.5",
  "serde",
@@ -3925,9 +3984,9 @@ dependencies = [
 
 [[package]]
 name = "winreg"
-version = "0.7.0"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0120db82e8a1e0b9fb3345a539c478767c0048d842860994d96113d5b667bd69"
+checksum = "80d0f4e272c85def139476380b12f9ac60926689dd2e01d4923222f40580869d"
 dependencies = [
  "winapi 0.3.9",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 98563c73..45057c63 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,6 +21,9 @@ postgresql = ["diesel/postgres", "diesel_migrations/postgres"]
 sqlite = ["diesel/sqlite", "diesel_migrations/sqlite", "libsqlite3-sys"]
 # Enable to use a vendored and statically linked openssl
 vendored_openssl = ["openssl/vendored"]
+# Enable MiMalloc memory allocator to replace the default malloc
+# This can improve performance for Alpine builds
+enable_mimalloc = ["mimalloc"]
 
 # Enable unstable features, requires nightly
 # Currently only used to enable rusts official ip support
@@ -38,7 +41,7 @@ tracing = { version = "0.1.32", features = ["log"] } # Needed to have lettre and
 backtrace = "0.3.64" # Logging panics to logfile instead stderr only
 
 # A `dotenv` implementation for Rust
-dotenv = { version = "0.15.0", default-features = false }
+dotenvy = { version = "0.15.1", default-features = false }
 
 # Lazy initialization
 once_cell = "1.10.0"
@@ -113,7 +116,7 @@ percent-encoding = "2.1.0" # URL encoding library used for URL's in the emails
 handlebars = { version = "4.2.2", features = ["dir_source"] }
 
 # HTTP client
-reqwest = { version = "0.11.9", features = ["stream", "json", "gzip", "brotli", "socks", "cookies", "trust-dns"] }
+reqwest = { version = "0.11.10", features = ["stream", "json", "gzip", "brotli", "socks", "cookies", "trust-dns"] }
 
 # For favicon extraction from main website
 html5gum = "0.4.0"
@@ -139,6 +142,10 @@ governor = "0.4.2"
 # Capture CTRL+C
 ctrlc = { version = "3.2.1", features = ["termination"] }
 
+# Allow overriding the default memory allocator
+# Mainly used for the musl builds, since the default musl malloc is very slow
+mimalloc = { version = "0.1.28", features = ["secure"], default-features = false, optional = true }
+
 [patch.crates-io]
 rocket = { git = 'https://github.com/SergioBenitez/Rocket', rev = 'ae0ccf43f11be5c00bb9cd49996c8bb06a7e1651' }
 
diff --git a/docker/Dockerfile.j2 b/docker/Dockerfile.j2
index d5d6da9a..2e7fd71d 100644
--- a/docker/Dockerfile.j2
+++ b/docker/Dockerfile.j2
@@ -3,7 +3,7 @@
 # This file was generated using a Jinja2 template.
 # Please make your changes in `Dockerfile.j2` and then `make` the individual Dockerfiles.
 
-{% set build_stage_base_image = "rust:1.58-buster" %}
+{% set build_stage_base_image = "rust:1.59-bullseye" %}
 {% if "alpine" in target_file %}
 {%   if "amd64" in target_file %}
 {%     set build_stage_base_image = "blackdex/rust-musl:x86_64-musl-stable" %}
@@ -23,19 +23,19 @@
 {%     set package_arch_target = "aarch64-unknown-linux-musl" %}
 {%   endif %}
 {% elif "amd64" in target_file %}
-{%   set runtime_stage_base_image = "debian:buster-slim" %}
+{%   set runtime_stage_base_image = "debian:bullseye-slim" %}
 {% elif "arm64" in target_file %}
-{%   set runtime_stage_base_image = "balenalib/aarch64-debian:buster" %}
+{%   set runtime_stage_base_image = "balenalib/aarch64-debian:bullseye" %}
 {%   set package_arch_name = "arm64" %}
 {%   set package_arch_target = "aarch64-unknown-linux-gnu" %}
 {%   set package_cross_compiler = "aarch64-linux-gnu" %}
 {% elif "armv6" in target_file %}
-{%   set runtime_stage_base_image = "balenalib/rpi-debian:buster" %}
+{%   set runtime_stage_base_image = "balenalib/rpi-debian:bullseye" %}
 {%   set package_arch_name = "armel" %}
 {%   set package_arch_target = "arm-unknown-linux-gnueabi" %}
 {%   set package_cross_compiler = "arm-linux-gnueabi" %}
 {% elif "armv7" in target_file %}
-{%   set runtime_stage_base_image = "balenalib/armv7hf-debian:buster" %}
+{%   set runtime_stage_base_image = "balenalib/armv7hf-debian:bullseye" %}
 {%   set package_arch_name = "armhf" %}
 {%   set package_arch_target = "armv7-unknown-linux-gnueabihf" %}
 {%   set package_cross_compiler = "arm-linux-gnueabihf" %}
@@ -163,7 +163,12 @@ RUN {{ mount_rust_cache -}} rustup target add {{ package_arch_target }}
 {% endif %}
 
 # Configure the DB ARG as late as possible to not invalidate the cached layers above
+{% if "alpine" in target_file %}
+# Enable MiMalloc to improve performance on Alpine builds
+ARG DB=sqlite,mysql,postgresql,enable_mimalloc
+{% else %}
 ARG DB=sqlite,mysql,postgresql
+{% endif %}
 
 # Builds your dependencies and removes the
 # dummy project, except the target folder
diff --git a/docker/amd64/Dockerfile b/docker/amd64/Dockerfile
index ae837d1e..cd44d38c 100644
--- a/docker/amd64/Dockerfile
+++ b/docker/amd64/Dockerfile
@@ -27,7 +27,7 @@
 FROM vaultwarden/web-vault@sha256:4412f0790fc1b8c7c86fc07f7761cd37c554802738629e80c7aa35d8bf754f9f as vault
 
 ########################## BUILD IMAGE  ##########################
-FROM rust:1.58-buster as build
+FROM rust:1.59-bullseye as build
 
 
 
@@ -87,7 +87,7 @@ RUN cargo build --features ${DB} --release
 ######################## RUNTIME IMAGE  ########################
 # Create a new stage with a minimal image
 # because we already have a binary built
-FROM debian:buster-slim
+FROM debian:bullseye-slim
 
 ENV ROCKET_PROFILE="release" \
     ROCKET_ADDRESS=0.0.0.0 \
diff --git a/docker/amd64/Dockerfile.alpine b/docker/amd64/Dockerfile.alpine
index 659b1580..4109c1e8 100644
--- a/docker/amd64/Dockerfile.alpine
+++ b/docker/amd64/Dockerfile.alpine
@@ -58,7 +58,8 @@ COPY ./build.rs ./build.rs
 RUN rustup target add x86_64-unknown-linux-musl
 
 # Configure the DB ARG as late as possible to not invalidate the cached layers above
-ARG DB=sqlite,mysql,postgresql
+# Enable MiMalloc to improve performance on Alpine builds
+ARG DB=sqlite,mysql,postgresql,enable_mimalloc
 
 # Builds your dependencies and removes the
 # dummy project, except the target folder
diff --git a/docker/amd64/Dockerfile.buildx b/docker/amd64/Dockerfile.buildx
index 90af9c73..54285af8 100644
--- a/docker/amd64/Dockerfile.buildx
+++ b/docker/amd64/Dockerfile.buildx
@@ -27,7 +27,7 @@
 FROM vaultwarden/web-vault@sha256:4412f0790fc1b8c7c86fc07f7761cd37c554802738629e80c7aa35d8bf754f9f as vault
 
 ########################## BUILD IMAGE  ##########################
-FROM rust:1.58-buster as build
+FROM rust:1.59-bullseye as build
 
 
 
@@ -87,7 +87,7 @@ RUN --mount=type=cache,target=/root/.cargo/git --mount=type=cache,target=/root/.
 ######################## RUNTIME IMAGE  ########################
 # Create a new stage with a minimal image
 # because we already have a binary built
-FROM debian:buster-slim
+FROM debian:bullseye-slim
 
 ENV ROCKET_PROFILE="release" \
     ROCKET_ADDRESS=0.0.0.0 \
diff --git a/docker/amd64/Dockerfile.buildx.alpine b/docker/amd64/Dockerfile.buildx.alpine
index cb7f5b7e..47d15659 100644
--- a/docker/amd64/Dockerfile.buildx.alpine
+++ b/docker/amd64/Dockerfile.buildx.alpine
@@ -58,7 +58,8 @@ COPY ./build.rs ./build.rs
 RUN --mount=type=cache,target=/root/.cargo/git --mount=type=cache,target=/root/.cargo/registry rustup target add x86_64-unknown-linux-musl
 
 # Configure the DB ARG as late as possible to not invalidate the cached layers above
-ARG DB=sqlite,mysql,postgresql
+# Enable MiMalloc to improve performance on Alpine builds
+ARG DB=sqlite,mysql,postgresql,enable_mimalloc
 
 # Builds your dependencies and removes the
 # dummy project, except the target folder
diff --git a/docker/arm64/Dockerfile b/docker/arm64/Dockerfile
index b2806d87..b462ed74 100644
--- a/docker/arm64/Dockerfile
+++ b/docker/arm64/Dockerfile
@@ -27,7 +27,7 @@
 FROM vaultwarden/web-vault@sha256:4412f0790fc1b8c7c86fc07f7761cd37c554802738629e80c7aa35d8bf754f9f as vault
 
 ########################## BUILD IMAGE  ##########################
-FROM rust:1.58-buster as build
+FROM rust:1.59-bullseye as build
 
 
 
@@ -107,7 +107,7 @@ RUN cargo build --features ${DB} --release --target=aarch64-unknown-linux-gnu
 ######################## RUNTIME IMAGE  ########################
 # Create a new stage with a minimal image
 # because we already have a binary built
-FROM balenalib/aarch64-debian:buster
+FROM balenalib/aarch64-debian:bullseye
 
 ENV ROCKET_PROFILE="release" \
     ROCKET_ADDRESS=0.0.0.0 \
diff --git a/docker/arm64/Dockerfile.alpine b/docker/arm64/Dockerfile.alpine
index 2a5cb9b1..09921643 100644
--- a/docker/arm64/Dockerfile.alpine
+++ b/docker/arm64/Dockerfile.alpine
@@ -58,7 +58,8 @@ COPY ./build.rs ./build.rs
 RUN rustup target add aarch64-unknown-linux-musl
 
 # Configure the DB ARG as late as possible to not invalidate the cached layers above
-ARG DB=sqlite,mysql,postgresql
+# Enable MiMalloc to improve performance on Alpine builds
+ARG DB=sqlite,mysql,postgresql,enable_mimalloc
 
 # Builds your dependencies and removes the
 # dummy project, except the target folder
diff --git a/docker/arm64/Dockerfile.buildx b/docker/arm64/Dockerfile.buildx
index d14680fe..c0240c36 100644
--- a/docker/arm64/Dockerfile.buildx
+++ b/docker/arm64/Dockerfile.buildx
@@ -27,7 +27,7 @@
 FROM vaultwarden/web-vault@sha256:4412f0790fc1b8c7c86fc07f7761cd37c554802738629e80c7aa35d8bf754f9f as vault
 
 ########################## BUILD IMAGE  ##########################
-FROM rust:1.58-buster as build
+FROM rust:1.59-bullseye as build
 
 
 
@@ -107,7 +107,7 @@ RUN --mount=type=cache,target=/root/.cargo/git --mount=type=cache,target=/root/.
 ######################## RUNTIME IMAGE  ########################
 # Create a new stage with a minimal image
 # because we already have a binary built
-FROM balenalib/aarch64-debian:buster
+FROM balenalib/aarch64-debian:bullseye
 
 ENV ROCKET_PROFILE="release" \
     ROCKET_ADDRESS=0.0.0.0 \
diff --git a/docker/arm64/Dockerfile.buildx.alpine b/docker/arm64/Dockerfile.buildx.alpine
index 1a5797d6..8f08cdf8 100644
--- a/docker/arm64/Dockerfile.buildx.alpine
+++ b/docker/arm64/Dockerfile.buildx.alpine
@@ -58,7 +58,8 @@ COPY ./build.rs ./build.rs
 RUN --mount=type=cache,target=/root/.cargo/git --mount=type=cache,target=/root/.cargo/registry rustup target add aarch64-unknown-linux-musl
 
 # Configure the DB ARG as late as possible to not invalidate the cached layers above
-ARG DB=sqlite,mysql,postgresql
+# Enable MiMalloc to improve performance on Alpine builds
+ARG DB=sqlite,mysql,postgresql,enable_mimalloc
 
 # Builds your dependencies and removes the
 # dummy project, except the target folder
diff --git a/docker/armv6/Dockerfile b/docker/armv6/Dockerfile
index 31861667..e727eed8 100644
--- a/docker/armv6/Dockerfile
+++ b/docker/armv6/Dockerfile
@@ -27,7 +27,7 @@
 FROM vaultwarden/web-vault@sha256:4412f0790fc1b8c7c86fc07f7761cd37c554802738629e80c7aa35d8bf754f9f as vault
 
 ########################## BUILD IMAGE  ##########################
-FROM rust:1.58-buster as build
+FROM rust:1.59-bullseye as build
 
 
 
@@ -107,7 +107,7 @@ RUN cargo build --features ${DB} --release --target=arm-unknown-linux-gnueabi
 ######################## RUNTIME IMAGE  ########################
 # Create a new stage with a minimal image
 # because we already have a binary built
-FROM balenalib/rpi-debian:buster
+FROM balenalib/rpi-debian:bullseye
 
 ENV ROCKET_PROFILE="release" \
     ROCKET_ADDRESS=0.0.0.0 \
diff --git a/docker/armv6/Dockerfile.alpine b/docker/armv6/Dockerfile.alpine
index 3dd50e8a..0b062e72 100644
--- a/docker/armv6/Dockerfile.alpine
+++ b/docker/armv6/Dockerfile.alpine
@@ -58,7 +58,8 @@ COPY ./build.rs ./build.rs
 RUN rustup target add arm-unknown-linux-musleabi
 
 # Configure the DB ARG as late as possible to not invalidate the cached layers above
-ARG DB=sqlite,mysql,postgresql
+# Enable MiMalloc to improve performance on Alpine builds
+ARG DB=sqlite,mysql,postgresql,enable_mimalloc
 
 # Builds your dependencies and removes the
 # dummy project, except the target folder
diff --git a/docker/armv6/Dockerfile.buildx b/docker/armv6/Dockerfile.buildx
index 76d4f27d..658a0a96 100644
--- a/docker/armv6/Dockerfile.buildx
+++ b/docker/armv6/Dockerfile.buildx
@@ -27,7 +27,7 @@
 FROM vaultwarden/web-vault@sha256:4412f0790fc1b8c7c86fc07f7761cd37c554802738629e80c7aa35d8bf754f9f as vault
 
 ########################## BUILD IMAGE  ##########################
-FROM rust:1.58-buster as build
+FROM rust:1.59-bullseye as build
 
 
 
@@ -107,7 +107,7 @@ RUN --mount=type=cache,target=/root/.cargo/git --mount=type=cache,target=/root/.
 ######################## RUNTIME IMAGE  ########################
 # Create a new stage with a minimal image
 # because we already have a binary built
-FROM balenalib/rpi-debian:buster
+FROM balenalib/rpi-debian:bullseye
 
 ENV ROCKET_PROFILE="release" \
     ROCKET_ADDRESS=0.0.0.0 \
diff --git a/docker/armv6/Dockerfile.buildx.alpine b/docker/armv6/Dockerfile.buildx.alpine
index 391090cf..b0b5ec1b 100644
--- a/docker/armv6/Dockerfile.buildx.alpine
+++ b/docker/armv6/Dockerfile.buildx.alpine
@@ -58,7 +58,8 @@ COPY ./build.rs ./build.rs
 RUN --mount=type=cache,target=/root/.cargo/git --mount=type=cache,target=/root/.cargo/registry rustup target add arm-unknown-linux-musleabi
 
 # Configure the DB ARG as late as possible to not invalidate the cached layers above
-ARG DB=sqlite,mysql,postgresql
+# Enable MiMalloc to improve performance on Alpine builds
+ARG DB=sqlite,mysql,postgresql,enable_mimalloc
 
 # Builds your dependencies and removes the
 # dummy project, except the target folder
diff --git a/docker/armv7/Dockerfile b/docker/armv7/Dockerfile
index 970448f2..0986e02e 100644
--- a/docker/armv7/Dockerfile
+++ b/docker/armv7/Dockerfile
@@ -27,7 +27,7 @@
 FROM vaultwarden/web-vault@sha256:4412f0790fc1b8c7c86fc07f7761cd37c554802738629e80c7aa35d8bf754f9f as vault
 
 ########################## BUILD IMAGE  ##########################
-FROM rust:1.58-buster as build
+FROM rust:1.59-bullseye as build
 
 
 
@@ -107,7 +107,7 @@ RUN cargo build --features ${DB} --release --target=armv7-unknown-linux-gnueabih
 ######################## RUNTIME IMAGE  ########################
 # Create a new stage with a minimal image
 # because we already have a binary built
-FROM balenalib/armv7hf-debian:buster
+FROM balenalib/armv7hf-debian:bullseye
 
 ENV ROCKET_PROFILE="release" \
     ROCKET_ADDRESS=0.0.0.0 \
diff --git a/docker/armv7/Dockerfile.alpine b/docker/armv7/Dockerfile.alpine
index 8bd28535..2ac9bfa0 100644
--- a/docker/armv7/Dockerfile.alpine
+++ b/docker/armv7/Dockerfile.alpine
@@ -59,7 +59,8 @@ COPY ./build.rs ./build.rs
 RUN rustup target add armv7-unknown-linux-musleabihf
 
 # Configure the DB ARG as late as possible to not invalidate the cached layers above
-ARG DB=sqlite,mysql,postgresql
+# Enable MiMalloc to improve performance on Alpine builds
+ARG DB=sqlite,mysql,postgresql,enable_mimalloc
 
 # Builds your dependencies and removes the
 # dummy project, except the target folder
diff --git a/docker/armv7/Dockerfile.buildx b/docker/armv7/Dockerfile.buildx
index a5207747..3e31da87 100644
--- a/docker/armv7/Dockerfile.buildx
+++ b/docker/armv7/Dockerfile.buildx
@@ -27,7 +27,7 @@
 FROM vaultwarden/web-vault@sha256:4412f0790fc1b8c7c86fc07f7761cd37c554802738629e80c7aa35d8bf754f9f as vault
 
 ########################## BUILD IMAGE  ##########################
-FROM rust:1.58-buster as build
+FROM rust:1.59-bullseye as build
 
 
 
@@ -107,7 +107,7 @@ RUN --mount=type=cache,target=/root/.cargo/git --mount=type=cache,target=/root/.
 ######################## RUNTIME IMAGE  ########################
 # Create a new stage with a minimal image
 # because we already have a binary built
-FROM balenalib/armv7hf-debian:buster
+FROM balenalib/armv7hf-debian:bullseye
 
 ENV ROCKET_PROFILE="release" \
     ROCKET_ADDRESS=0.0.0.0 \
diff --git a/docker/armv7/Dockerfile.buildx.alpine b/docker/armv7/Dockerfile.buildx.alpine
index e5e211f5..27810277 100644
--- a/docker/armv7/Dockerfile.buildx.alpine
+++ b/docker/armv7/Dockerfile.buildx.alpine
@@ -59,7 +59,8 @@ COPY ./build.rs ./build.rs
 RUN --mount=type=cache,target=/root/.cargo/git --mount=type=cache,target=/root/.cargo/registry rustup target add armv7-unknown-linux-musleabihf
 
 # Configure the DB ARG as late as possible to not invalidate the cached layers above
-ARG DB=sqlite,mysql,postgresql
+# Enable MiMalloc to improve performance on Alpine builds
+ARG DB=sqlite,mysql,postgresql,enable_mimalloc
 
 # Builds your dependencies and removes the
 # dummy project, except the target folder
diff --git a/src/api/core/accounts.rs b/src/api/core/accounts.rs
index 1408ac6f..d0a9b37a 100644
--- a/src/api/core/accounts.rs
+++ b/src/api/core/accounts.rs
@@ -599,12 +599,11 @@ async fn password_hint(data: JsonUpcase<PasswordHintData>, conn: DbConn) -> Empt
                 // There is still a timing side channel here in that the code
                 // paths that send mail take noticeably longer than ones that
                 // don't. Add a randomized sleep to mitigate this somewhat.
-                use rand::{thread_rng, Rng};
-                let mut rng = thread_rng();
-                let base = 1000;
+                use rand::{rngs::SmallRng, Rng, SeedableRng};
+                let mut rng = SmallRng::from_entropy();
                 let delta: i32 = 100;
-                let sleep_ms = (base + rng.gen_range(-delta..=delta)) as u64;
-                std::thread::sleep(std::time::Duration::from_millis(sleep_ms));
+                let sleep_ms = (1_000 + rng.gen_range(-delta..=delta)) as u64;
+                tokio::time::sleep(tokio::time::Duration::from_millis(sleep_ms)).await;
                 Ok(())
             } else {
                 err!(NO_HINT);
@@ -626,12 +625,16 @@ async fn password_hint(data: JsonUpcase<PasswordHintData>, conn: DbConn) -> Empt
 
 #[derive(Deserialize)]
 #[allow(non_snake_case)]
-struct PreloginData {
+pub struct PreloginData {
     Email: String,
 }
 
 #[post("/accounts/prelogin", data = "<data>")]
 async fn prelogin(data: JsonUpcase<PreloginData>, conn: DbConn) -> Json<Value> {
+    _prelogin(data, conn).await
+}
+
+pub async fn _prelogin(data: JsonUpcase<PreloginData>, conn: DbConn) -> Json<Value> {
     let data: PreloginData = data.into_inner().data;
 
     let (kdf_type, kdf_iter) = match User::find_by_mail(&data.Email, &conn).await {
diff --git a/src/api/core/mod.rs b/src/api/core/mod.rs
index e34343d3..381c654d 100644
--- a/src/api/core/mod.rs
+++ b/src/api/core/mod.rs
@@ -1,4 +1,4 @@
-mod accounts;
+pub mod accounts;
 mod ciphers;
 mod emergency_access;
 mod folders;
diff --git a/src/api/identity.rs b/src/api/identity.rs
index 2ed889bb..fc7ffcec 100644
--- a/src/api/identity.rs
+++ b/src/api/identity.rs
@@ -9,8 +9,9 @@ use serde_json::Value;
 
 use crate::{
     api::{
+        core::accounts::{PreloginData, _prelogin},
         core::two_factor::{duo, email, email::EmailTokenData, yubikey},
-        ApiResult, EmptyResult, JsonResult,
+        ApiResult, EmptyResult, JsonResult, JsonUpcase,
     },
     auth::ClientIp,
     db::{models::*, DbConn},
@@ -19,7 +20,7 @@ use crate::{
 };
 
 pub fn routes() -> Vec<Route> {
-    routes![login]
+    routes![login, prelogin]
 }
 
 #[post("/connect/token", data = "<data>")]
@@ -449,6 +450,11 @@ async fn _json_err_twofactor(providers: &[i32], user_uuid: &str, conn: &DbConn)
     Ok(result)
 }
 
+#[post("/accounts/prelogin", data = "<data>")]
+async fn prelogin(data: JsonUpcase<PreloginData>, conn: DbConn) -> Json<Value> {
+    _prelogin(data, conn).await
+}
+
 // https://github.com/bitwarden/jslib/blob/master/common/src/models/request/tokenRequest.ts
 // https://github.com/bitwarden/mobile/blob/master/src/Core/Models/Request/TokenRequest.cs
 #[derive(Debug, Clone, Default, FromForm)]
diff --git a/src/config.rs b/src/config.rs
index 59f02b74..2cef76e2 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -59,13 +59,13 @@ macro_rules! make_config {
         impl ConfigBuilder {
             #[allow(clippy::field_reassign_with_default)]
             fn from_env() -> Self {
-                match dotenv::from_path(get_env("ENV_FILE").unwrap_or_else(|| String::from(".env"))) {
+                match dotenvy::from_path(get_env("ENV_FILE").unwrap_or_else(|| String::from(".env"))) {
                     Ok(_) => (),
                     Err(e) => match e {
-                        dotenv::Error::LineParse(msg, pos) => {
+                        dotenvy::Error::LineParse(msg, pos) => {
                             panic!("Error loading the .env file:\nNear {:?} on position {}\nPlease fix and restart!\n", msg, pos);
                         },
-                        dotenv::Error::Io(ioerr) => match ioerr.kind() {
+                        dotenvy::Error::Io(ioerr) => match ioerr.kind() {
                             std::io::ErrorKind::NotFound => {
                                 println!("[INFO] No .env file found.\n");
                             },
@@ -955,7 +955,8 @@ impl Config {
                 handle.shutdown().ok();
             }
             // Wait a bit before stopping the web server
-            std::thread::sleep(std::time::Duration::from_secs(1));
+            tokio::runtime::Handle::current()
+                .block_on(async move { tokio::time::sleep(tokio::time::Duration::from_secs(1)).await });
             if let Some(handle) = c.rocket_shutdown_handle.clone() {
                 handle.notify();
             }
diff --git a/src/main.rs b/src/main.rs
index 08ac9d7a..59ac7eef 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -8,6 +8,13 @@
 // If you go above 128 it will cause rust-analyzer to fail,
 #![recursion_limit = "87"]
 
+// When enabled use MiMalloc as malloc instead of the default malloc
+#[cfg(feature = "enable_mimalloc")]
+use mimalloc::MiMalloc;
+#[cfg(feature = "enable_mimalloc")]
+#[cfg_attr(feature = "enable_mimalloc", global_allocator)]
+static GLOBAL: MiMalloc = MiMalloc;
+
 #[macro_use]
 extern crate rocket;
 #[macro_use]
@@ -28,7 +35,6 @@ use std::{
     process::exit,
     str::FromStr,
     thread,
-    time::Duration,
 };
 
 #[macro_use]
@@ -71,7 +77,7 @@ async fn main() -> Result<(), Error> {
     create_dir(&CONFIG.sends_folder(), "sends folder");
     create_dir(&CONFIG.attachments_folder(), "attachments folder");
 
-    let pool = create_db_pool();
+    let pool = create_db_pool().await;
     schedule_jobs(pool.clone()).await;
     crate::db::models::TwoFactor::migrate_u2f_to_webauthn(&pool.get().await.unwrap()).await.unwrap();
 
@@ -315,8 +321,8 @@ fn check_web_vault() {
     }
 }
 
-fn create_db_pool() -> db::DbPool {
-    match util::retry_db(db::DbPool::from_config, CONFIG.db_connection_retries()) {
+async fn create_db_pool() -> db::DbPool {
+    match util::retry_db(db::DbPool::from_config, CONFIG.db_connection_retries()).await {
         Ok(p) => p,
         Err(e) => {
             error!("Error creating database pool: {:?}", e);
@@ -430,7 +436,9 @@ async fn schedule_jobs(pool: db::DbPool) {
             // tick, the one that was added earlier will run first.
             loop {
                 sched.tick();
-                thread::sleep(Duration::from_millis(CONFIG.job_poll_interval_ms()));
+                runtime.block_on(async move {
+                    tokio::time::sleep(tokio::time::Duration::from_millis(CONFIG.job_poll_interval_ms())).await
+                });
             }
         })
         .expect("Error spawning job scheduler thread");
diff --git a/src/util.rs b/src/util.rs
index de61a354..ae2639fb 100644
--- a/src/util.rs
+++ b/src/util.rs
@@ -11,8 +11,10 @@ use rocket::{
     Data, Orbit, Request, Response, Rocket,
 };
 
-use std::thread::sleep;
-use std::time::Duration;
+use tokio::{
+    runtime::Handle,
+    time::{sleep, Duration},
+};
 
 use crate::CONFIG;
 
@@ -581,14 +583,13 @@ where
                 if tries >= max_tries {
                     return err;
                 }
-
-                sleep(Duration::from_millis(500));
+                Handle::current().block_on(async move { sleep(Duration::from_millis(500)).await });
             }
         }
     }
 }
 
-pub fn retry_db<F, T, E>(func: F, max_tries: u32) -> Result<T, E>
+pub async fn retry_db<F, T, E>(func: F, max_tries: u32) -> Result<T, E>
 where
     F: Fn() -> Result<T, E>,
     E: std::error::Error,
@@ -607,7 +608,7 @@ where
 
                 warn!("Can't connect to database, retrying: {:?}", e);
 
-                sleep(Duration::from_millis(1_000));
+                sleep(Duration::from_millis(1_000)).await;
             }
         }
     }