diff --git a/Cargo.lock b/Cargo.lock
index cf619001163de2641a82bee6d0dc5f4ff19d2e50..7c6f5b337a0291c29fabb5a789642f61cff6a50c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -173,8 +173,6 @@ version = "1.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d0dd286184b392a1ce6b3deecd073f0330df194bf935b87f852147d50d0d2d18"
 dependencies = [
- "bzip2",
- "flate2",
  "lazy_static",
  "libc",
 ]
@@ -191,27 +189,6 @@ version = "1.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
 
-[[package]]
-name = "bzip2"
-version = "0.4.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bdb116a6ef3f6c3698828873ad02c3014b3c85cadb88496095628e3ef1e347f8"
-dependencies = [
- "bzip2-sys",
- "libc",
-]
-
-[[package]]
-name = "bzip2-sys"
-version = "0.1.11+1.0.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "736a955f3fa7875102d57c82b8cac37ec45224a07fd32d58f9f7a186b6cd4cdc"
-dependencies = [
- "cc",
- "libc",
- "pkg-config",
-]
-
 [[package]]
 name = "cc"
 version = "1.0.79"
@@ -303,15 +280,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "crc32fast"
-version = "1.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b540bd8bc810d3885c6ea91e2018302f68baba2129ab3e88f32389ee9370880d"
-dependencies = [
- "cfg-if",
-]
-
 [[package]]
 name = "crunchy"
 version = "0.2.2"
@@ -539,16 +507,6 @@ version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0ce7134b9999ecaf8bcd65542e436736ef32ddca1b3e06094cb6ec5755203b80"
 
-[[package]]
-name = "flate2"
-version = "1.0.25"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a8a2db397cb1c8772f31494cb8917e48cd1e64f0fa7efac59fbd741a0a8ce841"
-dependencies = [
- "crc32fast",
- "miniz_oxide",
-]
-
 [[package]]
 name = "generic-array"
 version = "0.14.6"
@@ -611,14 +569,17 @@ name = "hashbrown"
 version = "0.12.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
+dependencies = [
+ "ahash",
+]
 
 [[package]]
 name = "hashlink"
-version = "0.7.0"
+version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7249a3129cbc1ffccd74857f81464a323a152173cdb134e0fd81bc803b29facf"
+checksum = "69fe1fcf8b4278d860ad0548329f892a3631fb63f82574df68275f34cdbe0ffa"
 dependencies = [
- "hashbrown 0.11.2",
+ "hashbrown 0.12.3",
 ]
 
 [[package]]
@@ -768,9 +729,9 @@ checksum = "348108ab3fba42ec82ff6e9564fc4ca0247bdccdc68dd8af9764bbc79c3c8ffb"
 
 [[package]]
 name = "libsqlite3-sys"
-version = "0.22.2"
+version = "0.25.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "290b64917f8b0cb885d9de0f9959fe1f775d7fa12f1da2db9001c1c8ab60f89d"
+checksum = "29f835d03d717946d28b1d1ed632eb6f0e24a299388ee623d0c23118d3e8a7fa"
 dependencies = [
  "cc",
  "pkg-config",
@@ -1156,16 +1117,15 @@ dependencies = [
 
 [[package]]
 name = "rusqlite"
-version = "0.25.4"
+version = "0.28.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c4b1eaf239b47034fb450ee9cdedd7d0226571689d8823030c4b6c2cb407152"
+checksum = "01e213bc3ecb39ac32e81e51ebe31fd888a940515173e3a18a35f8c6e896422a"
 dependencies = [
  "bitflags",
  "fallible-iterator",
  "fallible-streaming-iterator",
  "hashlink",
  "libsqlite3-sys",
- "memchr",
  "smallvec",
 ]
 
@@ -1208,12 +1168,10 @@ dependencies = [
  "anyhow",
  "base64",
  "buffered-reader",
- "bzip2",
  "chrono",
  "dyn-clone",
  "eax",
  "ed25519-dalek",
- "flate2",
  "getrandom 0.2.8",
  "idna",
  "lalrpop",
diff --git a/Cargo.toml b/Cargo.toml
index d6823e43131847ca274ac180b1a2f83f93805704..648ec8aed6f676f9a0d8c2cecf80dd13b2a905ae 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -27,19 +27,24 @@ memmem = "0.1"
 memoffset = "0.6"
 # When bumping the version of Sequoia search the code for XXX to find
 # spots where we can take advantage of new features.
-sequoia-openpgp = { version = "1.0", default-features = false }
+sequoia-openpgp = { version = "1.0", default-features = false, features = ["compression"] }
 thiserror = "1"
 
 [dependencies.rusqlite]
-version = "0.25"
+version = "0.28"
 features = ["bundled", "collation", "blob"]
 
 [lib]
 crate-type = ["lib", "cdylib", "staticlib"]
 
-[features]
-default = [
-    "sequoia-openpgp/default",
-]
-crypto-nettle = ["sequoia-openpgp/crypto-nettle"]
-crypto-cng = ["sequoia-openpgp/crypto-cng"]
+[target.'cfg(not(windows))'.dev-dependencies]
+# Enables a crypto backend for the tests:
+sequoia-openpgp = { version = "1", default-features = false, features = ["crypto-nettle"]  }
+
+[target.'cfg(windows)'.dev-dependencies]
+# Enables a crypto backend for the tests:
+sequoia-openpgp = { version = "1", default-features = false, features = ["crypto-cng"] }
+
+[package.metadata.docs.rs]
+# Enables a crypto backend for the docs.rs generation:
+features = ["sequoia-openpgp/default"]