diff --git a/Cargo.lock b/Cargo.lock
index debfe6d..863b0df 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -124,26 +124,24 @@ dependencies = [
 
 [[package]]
 name = "clap"
-version = "3.2.20"
+version = "4.0.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "23b71c3ce99b7611011217b366d923f1d0a7e07a92bb2dbf1e84508c673ca3bd"
+checksum = "91b9970d7505127a162fdaa9b96428d28a479ba78c9ec7550a63a5d9863db682"
 dependencies = [
  "atty",
  "bitflags",
  "clap_derive",
  "clap_lex",
- "indexmap",
  "once_cell",
  "strsim",
  "termcolor",
- "textwrap",
 ]
 
 [[package]]
 name = "clap_derive"
-version = "3.2.18"
+version = "4.0.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ea0c8bce528c4be4da13ea6fead8965e95b6073585a2f05204bd8f4119f82a65"
+checksum = "0177313f9f02afc995627906bbd8967e2be069f5261954222dac78290c2b9014"
 dependencies = [
  "heck",
  "proc-macro-error",
@@ -154,9 +152,9 @@ dependencies = [
 
 [[package]]
 name = "clap_lex"
-version = "0.2.4"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2850f2f5a82cbf437dd5af4d49848fbdfc27c157c3d010345776f952765261c5"
+checksum = "0d4198f73e42b4936b35b5bb248d81d2b595ecb170da0bac7655c54eedfa8da8"
 dependencies = [
  "os_str_bytes",
 ]
@@ -296,12 +294,6 @@ dependencies = [
  "version_check",
 ]
 
-[[package]]
-name = "hashbrown"
-version = "0.12.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
-
 [[package]]
 name = "heck"
 version = "0.4.0"
@@ -361,16 +353,6 @@ dependencies = [
  "nom",
 ]
 
-[[package]]
-name = "indexmap"
-version = "1.9.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "10a35a97730320ffe8e2d410b5d3b69279b98d2c14bdb8b70ea89ecf7888d41e"
-dependencies = [
- "autocfg",
- "hashbrown",
-]
-
 [[package]]
 name = "js-sys"
 version = "0.3.59"
@@ -416,12 +398,11 @@ dependencies = [
 
 [[package]]
 name = "mail-parser"
-version = "0.5.0"
+version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e25e9e9cd1360538e0ca33499f12fd180f3611d7a8e1a50b7e4e43a4c5dd4b7"
+checksum = "f9c5c7e7ee68a597425d5e4134dfa0dbbc1f86cc047c9a8c1dde1bf34fafe461"
 dependencies = [
  "encoding_rs",
- "serde",
 ]
 
 [[package]]
@@ -616,26 +597,6 @@ dependencies = [
  "untrusted",
 ]
 
-[[package]]
-name = "serde"
-version = "1.0.144"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0f747710de3dcd43b88c9168773254e809d8ddbdf9653b84e2554ab219f17860"
-dependencies = [
- "serde_derive",
-]
-
-[[package]]
-name = "serde_derive"
-version = "1.0.144"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "94ed3a816fb1d101812f83e789f888322c34e291f894f19590dc310963e87a00"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
-]
-
 [[package]]
 name = "sha2"
 version = "0.10.5"
@@ -685,12 +646,6 @@ dependencies = [
  "winapi-util",
 ]
 
-[[package]]
-name = "textwrap"
-version = "0.15.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b1141d4d61095b28419e22cb0bbf02755f5e54e0526f97f1e3d1d160e60885fb"
-
 [[package]]
 name = "time"
 version = "0.1.44"
diff --git a/Cargo.toml b/Cargo.toml
index b898413..0ef8488 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,8 +13,8 @@ authors = [
 atom_syndication = "^0.11.0"
 base16ct = { version = "^0.1.0", features = [ "alloc" ] }
 chrono = "^0.4"
-clap = { version = "^3.2.16", features = [ "derive" ] }
+clap = { version = "^4.0.22", features = [ "derive" ] }
 imap = { version = "^2.4.1", default-features = false }
-mail-parser = "^0.5.0"
+mail-parser = "^0.7.0"
 rustls-connector = { version = "^0.16.1", default-features = false, features = [ "webpki-roots-certs", "quic" ] }
 sha2 = "^0.10.2"