diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 42441489d5..c5a51bbe9d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -81,13 +81,13 @@ jobs:
             rust: 1.68.0
             python: 3.9
 
-          # Minimum Supported Rust Version = 1.64.0
+          # Minimum Supported Rust Version = 1.65.0
           #
           # Minimum Supported Python Version = 3.7
           # This is the minimum version for which manylinux Python wheels are
           # built.
           - os: ubuntu-latest
-            rust: 1.64.0
+            rust: 1.65.0
             python: 3.7
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 709fbcfe9a..39f9857307 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,7 +3,9 @@
 ## [Unreleased]
 
 ### Changes
+- Increase MSRV to 1.65.0. #4236
 - Remove upper limit on the attachment size. #4253
+- Update rPGP to 0.10.1. #4236
 
 ### Fixes
 
diff --git a/Cargo.lock b/Cargo.lock
index 0acd6159b1..5ed14a5e35 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -55,7 +55,7 @@ checksum = "fcb51a0695d8f838b1ee009b3fbf66bda078cd64590202a864a8f3e8c4315c47"
 dependencies = [
  "getrandom 0.2.8",
  "once_cell",
- "version_check 0.9.4",
+ "version_check",
 ]
 
 [[package]]
@@ -133,7 +133,7 @@ dependencies = [
  "asn1-rs-derive",
  "asn1-rs-impl",
  "displaydoc",
- "nom 7.1.3",
+ "nom",
  "num-traits",
  "rusticata-macros",
  "thiserror",
@@ -200,7 +200,7 @@ dependencies = [
  "futures",
  "imap-proto",
  "log",
- "nom 7.1.3",
+ "nom",
  "once_cell",
  "ouroboros",
  "pin-utils",
@@ -253,7 +253,7 @@ dependencies = [
  "futures",
  "hostname",
  "log",
- "nom 7.1.3",
+ "nom",
  "pin-project",
  "thiserror",
  "tokio",
@@ -374,6 +374,12 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "349a06037c7bf932dd7e7d1f653678b2038b9ad46a74102f1fc7bd7872678cce"
 
+[[package]]
+name = "base16ct"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4c7f02d4ea65f2c1853089ffd8d2787bdbc63de2f0d29dedbcf8ccdfa0ccd4cf"
+
 [[package]]
 name = "base64"
 version = "0.11.0"
@@ -477,10 +483,20 @@ dependencies = [
 ]
 
 [[package]]
-name = "buf_redux"
-version = "0.8.4"
+name = "bstr"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3d4260bcc2e8fc9df1eac4919a720effeb63a3f0952f5bf4944adfa18897f09"
+dependencies = [
+ "memchr",
+ "serde",
+]
+
+[[package]]
+name = "buffer-redux"
+version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b953a6887648bb07a535631f2bc00fbdb2a2216f135552cb3f534ed136b9c07f"
+checksum = "d2886ea01509598caac116942abd33ab5a88fa32acdf7e4abfa0fc489ca520c9"
 dependencies = [
  "memchr",
  "safemem",
@@ -520,6 +536,16 @@ version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "89b2fd2a0dcf38d7971e2194b6b6eebab45ae01067456a7fd93d5547a61b70be"
 
+[[package]]
+name = "camellia"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3264e2574e9ef2b53ce6f536dea83a69ac0bc600b762d1523ff83fe07230ce30"
+dependencies = [
+ "byteorder",
+ "cipher",
+]
+
 [[package]]
 name = "camino"
 version = "1.1.3"
@@ -899,6 +925,18 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "crypto-bigint"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7c2538c4e68e52548bacb3e83ac549f903d44f011ac9d5abb5e132e67d0808f7"
+dependencies = [
+ "generic-array",
+ "rand_core 0.6.4",
+ "subtle",
+ "zeroize",
+]
+
 [[package]]
 name = "crypto-common"
 version = "0.1.6"
@@ -922,6 +960,21 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "curve25519-dalek"
+version = "4.0.0-rc.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "03d928d978dbec61a1167414f5ec534f24bea0d7a0d24dd9b6233d3d8223e585"
+dependencies = [
+ "cfg-if",
+ "digest 0.10.6",
+ "fiat-crypto",
+ "packed_simd_2",
+ "platforms",
+ "subtle",
+ "zeroize",
+]
+
 [[package]]
 name = "cxx"
 version = "1.0.91"
@@ -1220,7 +1273,18 @@ checksum = "f1a467a65c5e759bce6e65eaf91cc29f466cdc57cb65777bd646872a8a1fd4de"
 dependencies = [
  "const-oid",
  "der_derive",
- "pem-rfc7468",
+ "pem-rfc7468 0.6.0",
+ "zeroize",
+]
+
+[[package]]
+name = "der"
+version = "0.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bc906908ea6458456e5eaa160a9c08543ec3d1e6f71e2235cedd660cb65f9df0"
+dependencies = [
+ "const-oid",
+ "pem-rfc7468 0.7.0",
  "zeroize",
 ]
 
@@ -1232,7 +1296,7 @@ checksum = "42d4bc9b0db0a0df9ae64634ac5bdefb7afcb534e182275ca0beadbe486701c1"
 dependencies = [
  "asn1-rs",
  "displaydoc",
- "nom 7.1.3",
+ "nom",
  "num-bigint",
  "num-traits",
  "rusticata-macros",
@@ -1252,18 +1316,18 @@ dependencies = [
 
 [[package]]
 name = "derive_builder"
-version = "0.11.2"
+version = "0.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d07adf7be193b71cc36b193d0f5fe60b918a3a9db4dad0449f57bcfd519704a3"
+checksum = "8d67778784b508018359cbc8696edb3db78160bab2c2a28ba7f56ef6932997f8"
 dependencies = [
  "derive_builder_macro",
 ]
 
 [[package]]
 name = "derive_builder_core"
-version = "0.11.2"
+version = "0.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1f91d4cfa921f1c05904dc3c57b4a32c38aed3340cce209f3a6fd1478babafc4"
+checksum = "c11bdc11a0c47bc7d37d582b5285da6849c96681023680b906673c5707af7b0f"
 dependencies = [
  "darling 0.14.3",
  "proc-macro2",
@@ -1273,9 +1337,9 @@ dependencies = [
 
 [[package]]
 name = "derive_builder_macro"
-version = "0.11.2"
+version = "0.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8f0314b72bed045f3a68671b3c86328386762c93f82d98c65c3cb5e5f573dd68"
+checksum = "ebcda35c7a396850a55ffeac740804b40ffec779b98fffbb1738f4033f0ee79e"
 dependencies = [
  "derive_builder_core",
  "syn",
@@ -1405,10 +1469,22 @@ version = "0.14.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "413301934810f597c1d19ca71c8710e99a3f1ba28a0d2ebc01551a2daeea3c5c"
 dependencies = [
- "der",
- "elliptic-curve",
- "rfc6979",
- "signature",
+ "der 0.6.1",
+ "elliptic-curve 0.12.3",
+ "rfc6979 0.3.1",
+ "signature 1.6.4",
+]
+
+[[package]]
+name = "ecdsa"
+version = "0.16.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "644d3b8674a5fc5b929ae435bca85c2323d85ccb013a5509c2ac9ee11a6284ba"
+dependencies = [
+ "der 0.7.1",
+ "elliptic-curve 0.13.2",
+ "rfc6979 0.4.0",
+ "signature 2.0.0",
 ]
 
 [[package]]
@@ -1418,7 +1494,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "91cff35c70bba8a626e3185d8cd48cc11b5437e1a5bcd15b9b5fa3c64b6dfee7"
 dependencies = [
  "serde",
- "signature",
+ "signature 1.6.4",
+]
+
+[[package]]
+name = "ed25519"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "be522bee13fa6d8059f4903a4084aa3bd50725e18150202f0238deb615cd6371"
+dependencies = [
+ "pkcs8 0.10.1",
+ "signature 2.0.0",
 ]
 
 [[package]]
@@ -1427,8 +1513,8 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c762bae6dcaf24c4c84667b8579785430908723d5c889f469d76a41d59cc7a9d"
 dependencies = [
- "curve25519-dalek",
- "ed25519",
+ "curve25519-dalek 3.2.0",
+ "ed25519 1.5.3",
  "rand 0.7.3",
  "serde",
  "serde_bytes",
@@ -1436,6 +1522,19 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "ed25519-dalek"
+version = "2.0.0-rc.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "798f704d128510932661a3489b08e3f4c934a01d61c5def59ae7b8e48f19665a"
+dependencies = [
+ "curve25519-dalek 4.0.0-rc.2",
+ "ed25519 2.2.0",
+ "serde",
+ "sha2 0.10.6",
+ "zeroize",
+]
+
 [[package]]
 name = "educe"
 version = "0.4.20"
@@ -1460,15 +1559,36 @@ version = "0.12.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e7bb888ab5300a19b8e5bceef25ac745ad065f3c9f7efc6de1b91958110891d3"
 dependencies = [
- "base16ct",
- "crypto-bigint",
- "der",
+ "base16ct 0.1.1",
+ "crypto-bigint 0.4.9",
+ "der 0.6.1",
+ "digest 0.10.6",
+ "ff 0.12.1",
+ "generic-array",
+ "group 0.12.1",
+ "rand_core 0.6.4",
+ "sec1 0.3.0",
+ "subtle",
+ "zeroize",
+]
+
+[[package]]
+name = "elliptic-curve"
+version = "0.13.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6ea5a92946e8614bb585254898bb7dd1ddad241ace60c52149e3765e34cc039d"
+dependencies = [
+ "base16ct 0.2.0",
+ "crypto-bigint 0.5.1",
  "digest 0.10.6",
- "ff",
+ "ff 0.13.0",
  "generic-array",
- "group",
+ "group 0.13.0",
+ "hkdf",
+ "pem-rfc7468 0.7.0",
+ "pkcs8 0.10.1",
  "rand_core 0.6.4",
- "sec1",
+ "sec1 0.7.1",
  "subtle",
  "zeroize",
 ]
@@ -1485,7 +1605,7 @@ dependencies = [
  "lazy_static",
  "rand 0.7.3",
  "time 0.1.45",
- "version_check 0.9.4",
+ "version_check",
 ]
 
 [[package]]
@@ -1749,6 +1869,22 @@ dependencies = [
  "subtle",
 ]
 
+[[package]]
+name = "ff"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ded41244b729663b1e574f1b4fb731469f69f79c17667b5d776b16cda0479449"
+dependencies = [
+ "rand_core 0.6.4",
+ "subtle",
+]
+
+[[package]]
+name = "fiat-crypto"
+version = "0.1.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "93ace6ec7cc19c8ed33a32eaa9ea692d7faea05006b5356b9e2b668ec4bc3955"
+
 [[package]]
 name = "filetime"
 version = "0.2.20"
@@ -1929,7 +2065,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bff49e947297f3312447abdca79f45f4738097cc82b06e72054d2223f601f1b9"
 dependencies = [
  "typenum",
- "version_check 0.9.4",
+ "version_check",
+ "zeroize",
 ]
 
 [[package]]
@@ -1978,7 +2115,18 @@ version = "0.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5dfbfb3a6cfbd390d5c9564ab283a0349b9b9fcd46a706c1eb10e0db70bfbac7"
 dependencies = [
- "ff",
+ "ff 0.12.1",
+ "rand_core 0.6.4",
+ "subtle",
+]
+
+[[package]]
+name = "group"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0f9ef7462f7c099f518d754361858f86d8a07af53ba9af0fe635bbccb151a63"
+dependencies = [
+ "ff 0.13.0",
  "rand_core 0.6.4",
  "subtle",
 ]
@@ -2062,6 +2210,15 @@ version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
 
+[[package]]
+name = "hkdf"
+version = "0.12.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "791a029f6b9fc27657f6f188ec6e5e43f6911f6f878e0dc5501396e09809d437"
+dependencies = [
+ "hmac",
+]
+
 [[package]]
 name = "hmac"
 version = "0.12.1"
@@ -2136,7 +2293,7 @@ version = "2.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6cb51c9a029ddc91b07a787f1d86b53ccfa49b0e86688c946ebe8d3555685dd7"
 dependencies = [
- "libm",
+ "libm 0.2.6",
 ]
 
 [[package]]
@@ -2215,6 +2372,15 @@ dependencies = [
  "cxx-build",
 ]
 
+[[package]]
+name = "idea"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "075557004419d7f2031b8bb7f44bb43e55a83ca7b63076a8fb8fe75753836477"
+dependencies = [
+ "cipher",
+]
+
 [[package]]
 name = "ident_case"
 version = "1.0.1"
@@ -2264,7 +2430,7 @@ version = "0.16.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f73b1b63179418b20aa81002d616c5f21b4ba257da9bca6989ea64dc573933e0"
 dependencies = [
- "nom 7.1.3",
+ "nom",
 ]
 
 [[package]]
@@ -2335,10 +2501,10 @@ dependencies = [
  "blake3",
  "bytes",
  "default-net",
- "der",
+ "der 0.6.1",
  "derive_more",
  "dirs-next",
- "ed25519-dalek",
+ "ed25519-dalek 1.0.1",
  "futures",
  "hex",
  "num_cpus",
@@ -2466,6 +2632,12 @@ version = "0.2.139"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "201de327520df007757c1f0adce6e827fe8562fbc28bfd9c15571c66ca1f5f79"
 
+[[package]]
+name = "libm"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7fc7aa29613bd6a620df431842069224d8bc9011086b1db4c0e0cd47fa03ec9a"
+
 [[package]]
 name = "libm"
 version = "0.2.6"
@@ -2737,16 +2909,6 @@ dependencies = [
  "static_assertions",
 ]
 
-[[package]]
-name = "nom"
-version = "4.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2ad2a91a8e869eeb30b9cb3119ae87773a8f4ae617f41b1eb9c154b2905f7bd6"
-dependencies = [
- "memchr",
- "version_check 0.1.5",
-]
-
 [[package]]
 name = "nom"
 version = "7.1.3"
@@ -2795,7 +2957,7 @@ checksum = "2399c9463abc5f909349d8aa9ba080e0b88b3ce2885389b60b993f39b1a56905"
 dependencies = [
  "byteorder",
  "lazy_static",
- "libm",
+ "libm 0.2.6",
  "num-integer",
  "num-iter",
  "num-traits",
@@ -2855,7 +3017,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "578ede34cf02f8924ab9447f50c28075b4d3e5b269972345e7e0372b38c6cdcd"
 dependencies = [
  "autocfg",
- "libm",
+ "libm 0.2.6",
 ]
 
 [[package]]
@@ -3011,8 +3173,20 @@ version = "0.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "51f44edd08f51e2ade572f141051021c5af22677e42b7dd28a88155151c33594"
 dependencies = [
- "ecdsa",
- "elliptic-curve",
+ "ecdsa 0.14.8",
+ "elliptic-curve 0.12.3",
+ "sha2 0.10.6",
+]
+
+[[package]]
+name = "p256"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7270da3e5caa82afd3deb054cc237905853813aea3859544bc082c3fe55b8d47"
+dependencies = [
+ "ecdsa 0.16.2",
+ "elliptic-curve 0.13.2",
+ "primeorder",
  "sha2 0.10.6",
 ]
 
@@ -3022,11 +3196,33 @@ version = "0.11.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dfc8c5bf642dde52bb9e87c0ecd8ca5a76faac2eeed98dedb7c717997e1080aa"
 dependencies = [
- "ecdsa",
- "elliptic-curve",
+ "ecdsa 0.14.8",
+ "elliptic-curve 0.12.3",
+ "sha2 0.10.6",
+]
+
+[[package]]
+name = "p384"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70786f51bcc69f6a4c0360e063a4cac5419ef7c5cd5b3c99ad70f3be5ba79209"
+dependencies = [
+ "ecdsa 0.16.2",
+ "elliptic-curve 0.13.2",
+ "primeorder",
  "sha2 0.10.6",
 ]
 
+[[package]]
+name = "packed_simd_2"
+version = "0.3.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1914cd452d8fccd6f9db48147b29fd4ae05bea9dc5d9ad578509f72415de282"
+dependencies = [
+ "cfg-if",
+ "libm 0.1.4",
+]
+
 [[package]]
 name = "parking"
 version = "2.0.0"
@@ -3080,6 +3276,15 @@ dependencies = [
  "base64ct",
 ]
 
+[[package]]
+name = "pem-rfc7468"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "88b39c9bfcfc231068454382784bb460aae594343fb030d46e9f50a645418412"
+dependencies = [
+ "base64ct",
+]
+
 [[package]]
 name = "percent-encoding"
 version = "2.2.0"
@@ -3088,17 +3293,19 @@ checksum = "478c572c3d73181ff3c2539045f6eb99e5491218eae919370993b890cdbdd98e"
 
 [[package]]
 name = "pgp"
-version = "0.9.0"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "991e3f098483f52c454c7cb16720adc010c2966a8845d3c34aad589cb86d3196"
+checksum = "37a79d6411154d1a9908e7a2c4bac60a5742f6125823c2c30780c7039aef02f0"
 dependencies = [
  "aes",
- "base64 0.13.1",
+ "base64 0.21.0",
  "bitfield",
  "block-padding",
  "blowfish",
- "buf_redux",
+ "bstr",
+ "buffer-redux",
  "byteorder",
+ "camellia",
  "cast5",
  "cfb-mode",
  "chrono",
@@ -3107,23 +3314,27 @@ dependencies = [
  "derive_builder",
  "des",
  "digest 0.10.6",
- "ed25519-dalek",
+ "ed25519-dalek 2.0.0-rc.2",
+ "elliptic-curve 0.13.2",
  "flate2",
  "generic-array",
  "hex",
+ "idea",
  "log",
  "md-5",
- "nom 4.2.3",
+ "nom",
  "num-bigint-dig",
  "num-derive",
  "num-traits",
+ "p256 0.13.0",
+ "p384 0.13.0",
  "rand 0.8.5",
  "ripemd",
- "rsa",
+ "rsa 0.9.0-pre.0",
  "sha1",
  "sha2 0.10.6",
  "sha3",
- "signature",
+ "signature 2.0.0",
  "smallvec",
  "thiserror",
  "twofish",
@@ -3169,9 +3380,21 @@ version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "eff33bdbdfc54cc98a2eca766ebdec3e1b8fb7387523d5c9c9a2891da856f719"
 dependencies = [
- "der",
- "pkcs8",
- "spki",
+ "der 0.6.1",
+ "pkcs8 0.9.0",
+ "spki 0.6.0",
+ "zeroize",
+]
+
+[[package]]
+name = "pkcs1"
+version = "0.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "178ba28ece1961eafdff1991bd1744c29564cbab5d803f3ccb4a4895a6c550a7"
+dependencies = [
+ "der 0.7.1",
+ "pkcs8 0.10.1",
+ "spki 0.7.0",
  "zeroize",
 ]
 
@@ -3181,8 +3404,18 @@ version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9eca2c590a5f85da82668fa685c09ce2888b9430e83299debf1f34b65fd4a4ba"
 dependencies = [
- "der",
- "spki",
+ "der 0.6.1",
+ "spki 0.6.0",
+]
+
+[[package]]
+name = "pkcs8"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3d2820d87d2b008616e5c27212dd9e0e694fb4c6b522de06094106813328cb49"
+dependencies = [
+ "der 0.7.1",
+ "spki 0.7.0",
 ]
 
 [[package]]
@@ -3191,6 +3424,12 @@ version = "0.3.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6ac9a59f73473f1b8d852421e59e64809f025994837ef743615c6d0c5b305160"
 
+[[package]]
+name = "platforms"
+version = "3.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e3d7ddaed09e0eb771a79ab0fd64609ba0afb0a8366421957936ad14cbd13630"
+
 [[package]]
 name = "plotters"
 version = "0.3.4"
@@ -3276,6 +3515,15 @@ dependencies = [
  "log",
 ]
 
+[[package]]
+name = "primeorder"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7613fdcc0831c10060fa69833ea8fa2caa94b6456f51e25356a885b530a2e3d0"
+dependencies = [
+ "elliptic-curve 0.13.2",
+]
+
 [[package]]
 name = "proc-macro-error"
 version = "1.0.4"
@@ -3286,7 +3534,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "syn",
- "version_check 0.9.4",
+ "version_check",
 ]
 
 [[package]]
@@ -3297,7 +3545,7 @@ checksum = "a1be40180e52ecc98ad80b184934baf3d0d29f979574e439af5a55274b35f869"
 dependencies = [
  "proc-macro2",
  "quote",
- "version_check 0.9.4",
+ "version_check",
 ]
 
 [[package]]
@@ -3662,11 +3910,21 @@ version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7743f17af12fa0b03b803ba12cd6a8d9483a587e89c69445e3909655c0b9fabb"
 dependencies = [
- "crypto-bigint",
+ "crypto-bigint 0.4.9",
  "hmac",
  "zeroize",
 ]
 
+[[package]]
+name = "rfc6979"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8dd2a808d456c4a54e300a23e9f5a67e122c3024119acbfd73e3bf664491cb2"
+dependencies = [
+ "hmac",
+ "subtle",
+]
+
 [[package]]
 name = "ring"
 version = "0.16.20"
@@ -3703,15 +3961,35 @@ dependencies = [
  "num-integer",
  "num-iter",
  "num-traits",
- "pkcs1",
- "pkcs8",
+ "pkcs1 0.4.1",
+ "pkcs8 0.9.0",
  "rand_core 0.6.4",
- "signature",
+ "signature 1.6.4",
  "smallvec",
  "subtle",
  "zeroize",
 ]
 
+[[package]]
+name = "rsa"
+version = "0.9.0-pre.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a7bc1d34159d63536b4d89944e9ab5bb952f45db6fa0b8b03c2f8c09fb5b7171"
+dependencies = [
+ "byteorder",
+ "digest 0.10.6",
+ "num-bigint-dig",
+ "num-integer",
+ "num-iter",
+ "num-traits",
+ "pkcs1 0.7.1",
+ "pkcs8 0.10.1",
+ "rand_core 0.6.4",
+ "signature 2.0.0",
+ "subtle",
+ "zeroize",
+]
+
 [[package]]
 name = "rusqlite"
 version = "0.28.0"
@@ -3759,7 +4037,7 @@ version = "4.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "faf0c4a6ece9950b9abdb62b1cfcf2a68b3b67a10ba445b3bb85be2a293d0632"
 dependencies = [
- "nom 7.1.3",
+ "nom",
 ]
 
 [[package]]
@@ -3905,10 +4183,24 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3be24c1842290c45df0a7bf069e0c268a747ad05a192f2fd7dcfdbc1cba40928"
 dependencies = [
- "base16ct",
- "der",
+ "base16ct 0.1.1",
+ "der 0.6.1",
+ "generic-array",
+ "pkcs8 0.9.0",
+ "subtle",
+ "zeroize",
+]
+
+[[package]]
+name = "sec1"
+version = "0.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "48518a2b5775ba8ca5b46596aae011caa431e6ce7e4a67ead66d92f08884220e"
+dependencies = [
+ "base16ct 0.2.0",
+ "der 0.7.1",
  "generic-array",
- "pkcs8",
+ "pkcs8 0.10.1",
  "subtle",
  "zeroize",
 ]
@@ -4108,6 +4400,16 @@ dependencies = [
  "rand_core 0.6.4",
 ]
 
+[[package]]
+name = "signature"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8fe458c98333f9c8152221191a77e2a44e8325d0193484af2e9421a53019e57d"
+dependencies = [
+ "digest 0.10.6",
+ "rand_core 0.6.4",
+]
+
 [[package]]
 name = "slab"
 version = "0.4.8"
@@ -4161,7 +4463,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "67cf02bbac7a337dc36e4f5a693db6c21e7863f45070f7064577eb4367a3212b"
 dependencies = [
  "base64ct",
- "der",
+ "der 0.6.1",
+]
+
+[[package]]
+name = "spki"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c0445c905640145c7ea8c1993555957f65e7c46d0535b91ba501bc9bfc85522f"
+dependencies = [
+ "base64ct",
+ "der 0.7.1",
 ]
 
 [[package]]
@@ -4171,7 +4483,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "19cfdc32e0199062113edf41f344fbf784b8205a94600233c84eb838f45191e1"
 dependencies = [
  "base64ct",
- "pem-rfc7468",
+ "pem-rfc7468 0.6.0",
  "sha2 0.10.6",
 ]
 
@@ -4181,14 +4493,14 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "288d8f5562af5a3be4bda308dd374b2c807b940ac370b5efa1c99311da91d9a1"
 dependencies = [
- "ed25519-dalek",
- "p256",
- "p384",
+ "ed25519-dalek 1.0.1",
+ "p256 0.11.1",
+ "p384 0.11.2",
  "rand_core 0.6.4",
- "rsa",
- "sec1",
+ "rsa 0.7.2",
+ "sec1 0.3.0",
  "sha2 0.10.6",
- "signature",
+ "signature 1.6.4",
  "ssh-encoding",
  "zeroize",
 ]
@@ -4932,12 +5244,6 @@ version = "0.2.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "accd4ea62f7bb7a82fe23066fb0957d48ef677f6eeb8215f372f52e48bb32426"
 
-[[package]]
-name = "version_check"
-version = "0.1.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "914b1a6776c4c929a602fafd8bc742e06365d4bcbe48c30f9cca5824f70dc9dd"
-
 [[package]]
 name = "version_check"
 version = "0.9.4"
@@ -5272,12 +5578,12 @@ dependencies = [
 
 [[package]]
 name = "x25519-dalek"
-version = "1.1.1"
+version = "2.0.0-pre.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a0c105152107e3b96f6a00a65e86ce82d9b125230e1c4302940eca58ff71f4f"
+checksum = "e5da623d8af10a62342bcbbb230e33e58a63255a58012f8653c578e54bab48df"
 dependencies = [
- "curve25519-dalek",
- "rand_core 0.5.1",
+ "curve25519-dalek 3.2.0",
+ "rand_core 0.6.4",
  "zeroize",
 ]
 
@@ -5292,7 +5598,7 @@ dependencies = [
  "data-encoding",
  "der-parser",
  "lazy_static",
- "nom 7.1.3",
+ "nom",
  "oid-registry",
  "rusticata-macros",
  "thiserror",
diff --git a/Cargo.toml b/Cargo.toml
index 9fe7b05a66..6ed09971b7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,7 +3,7 @@ name = "deltachat"
 version = "1.112.3"
 edition = "2021"
 license = "MPL-2.0"
-rust-version = "1.64"
+rust-version = "1.65"
 
 [profile.dev]
 debug = 0
@@ -63,7 +63,7 @@ num-traits = "0.2"
 once_cell = "1.17.0"
 percent-encoding = "2.2"
 parking_lot = "0.12"
-pgp = { version = "0.9", default-features = false }
+pgp = { version = "0.10", default-features = false }
 pretty_env_logger = { version = "0.4", optional = true }
 qrcodegen = "1.7.0"
 quick-xml = "0.27"
diff --git a/deny.toml b/deny.toml
index d5f70ed62c..8ef753a768 100644
--- a/deny.toml
+++ b/deny.toml
@@ -13,34 +13,43 @@ ignore = [
 # when upgrading.
 # Please keep this list alphabetically sorted.
 skip = [
+     { name = "base16ct", version = "0.1.1" },
      { name = "base64", version = "<0.21" },
      { name = "block-buffer", version = "<0.10" },
-     { name = "clap", version = "3.2.23" },
      { name = "clap_lex", version = "0.2.4" },
+     { name = "clap", version = "3.2.23" },
      { name = "convert_case", version = "0.4.0" },
-     { name = "darling", version = "<0.14" },
+     { name = "curve25519-dalek", version = "3.2.0" },
      { name = "darling_core", version = "<0.14" },
      { name = "darling_macro", version = "<0.14" },
+     { name = "darling", version = "<0.14" },
+     { name = "der", version = "0.6.1" },
      { name = "digest", version = "<0.10" },
+     { name = "ed25519-dalek", version = "1.0.1" },
+     { name = "ed25519", version = "1.5.3" },
      { name = "env_logger", version = "<0.10" },
      { name = "getrandom", version = "<0.2" },
      { name = "hermit-abi", version = "<0.3" },
      { name = "humantime", version = "<2.1" },
      { name = "idna", version = "<0.3" },
-     { name = "nom", version = "<7.1" },
+     { name = "libm", version = "0.1.4" },
+     { name = "pem-rfc7468", version = "0.6.0" },
+     { name = "pkcs8", version = "0.9.0" },
      { name = "quick-error", version = "<2.0" },
-     { name = "rand", version = "<0.8" },
      { name = "rand_chacha", version = "<0.3" },
      { name = "rand_core", version = "<0.6" },
+     { name = "rand", version = "<0.8" },
+     { name = "sec1", version = "0.3.0" },
      { name = "sha2", version = "<0.10" },
+     { name = "signature", version = "1.6.4" },
      { name = "spin", version = "<0.9.6" },
+     { name = "spki", version = "0.6.0" },
      { name = "time", version = "<0.3" },
-     { name = "version_check", version = "<0.9" },
      { name = "wasi", version = "<0.11" },
-     { name = "windows-sys", version = "<0.45" },
      { name = "windows_aarch64_msvc", version = "<0.42" },
      { name = "windows_i686_gnu", version = "<0.42" },
      { name = "windows_i686_msvc", version = "<0.42" },
+     { name = "windows-sys", version = "<0.45" },
      { name = "windows_x86_64_gnu", version = "<0.42" },
      { name = "windows_x86_64_msvc", version = "<0.42" },
 ]
diff --git a/src/mimeparser.rs b/src/mimeparser.rs
index 6d9b242c87..de5009ce40 100644
--- a/src/mimeparser.rs
+++ b/src/mimeparser.rs
@@ -1283,7 +1283,7 @@ impl MimeMessage {
         if !key.details.users.iter().any(|user| {
             user.id
                 .id()
-                .ends_with(&(String::from("<") + &peerstate.addr + ">"))
+                .ends_with((String::from("<") + &peerstate.addr + ">").as_bytes())
         }) {
             return Ok(false);
         }
diff --git a/src/pgp.rs b/src/pgp.rs
index 6cda276321..43ea19f9aa 100644
--- a/src/pgp.rs
+++ b/src/pgp.rs
@@ -10,7 +10,8 @@ use pgp::composed::{
     Deserializable, KeyType as PgpKeyType, Message, SecretKeyParamsBuilder, SignedPublicKey,
     SignedPublicSubKey, SignedSecretKey, StandaloneSignature, SubkeyParamsBuilder,
 };
-use pgp::crypto::{HashAlgorithm, SymmetricKeyAlgorithm};
+use pgp::crypto::hash::HashAlgorithm;
+use pgp::crypto::sym::SymmetricKeyAlgorithm;
 use pgp::types::{
     CompressionAlgorithm, KeyTrait, Mpi, PublicKeyTrait, SecretKeyTrait, StringToKey,
 };
@@ -50,7 +51,7 @@ impl<'a> KeyTrait for SignedPublicKeyOrSubkey<'a> {
         }
     }
 
-    fn algorithm(&self) -> pgp::crypto::PublicKeyAlgorithm {
+    fn algorithm(&self) -> pgp::crypto::public_key::PublicKeyAlgorithm {
         match self {
             Self::Key(k) => k.algorithm(),
             Self::Subkey(k) => k.algorithm(),
@@ -297,7 +298,7 @@ pub fn pk_decrypt(
 
     let skeys: Vec<&SignedSecretKey> = private_keys_for_decryption.keys().iter().collect();
 
-    let (decryptor, _) = msg.decrypt(|| "".into(), || "".into(), &skeys[..])?;
+    let (decryptor, _) = msg.decrypt(|| "".into(), &skeys[..])?;
     let msgs = decryptor.collect::<pgp::errors::Result<Vec<_>>>()?;
 
     if let Some(msg) = msgs.into_iter().next() {