diff --git a/fuzz/Cargo.lock b/fuzz/Cargo.lock
index b2f3f5f36..46118154d 100644
--- a/fuzz/Cargo.lock
+++ b/fuzz/Cargo.lock
@@ -233,6 +233,12 @@ version = "0.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9e1b586273c5702936fe7b7d6896644d8be71e6314cfe09d3167c95f712589e8"
 
+[[package]]
+name = "base64"
+version = "0.20.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0ea22880d78093b0cbe17c89f64a7d457941e65759157ec6cb31a31d652b05e5"
+
 [[package]]
 name = "base64ct"
 version = "1.5.3"
@@ -702,7 +708,7 @@ dependencies = [
  "async-smtp",
  "async_zip",
  "backtrace",
- "base64 0.13.1",
+ "base64 0.20.0",
  "bitflags",
  "chrono",
  "deltachat_derive",
@@ -719,7 +725,7 @@ dependencies = [
  "kamadak-exif",
  "lettre_email",
  "libc",
- "mailparse",
+ "mailparse 0.14.0",
  "native-tls",
  "num-derive",
  "num-traits",
@@ -764,7 +770,7 @@ dependencies = [
  "bolero",
  "deltachat",
  "format-flowed",
- "mailparse",
+ "mailparse 0.13.8",
 ]
 
 [[package]]
@@ -1691,6 +1697,17 @@ dependencies = [
  "quoted_printable",
 ]
 
+[[package]]
+name = "mailparse"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6b56570f5f8c0047260d1c8b5b331f62eb9c660b9dd4071a8c46f8c7d3f280aa"
+dependencies = [
+ "charset",
+ "data-encoding",
+ "quoted_printable",
+]
+
 [[package]]
 name = "match_cfg"
 version = "0.1.0"
@@ -1887,9 +1904,9 @@ dependencies = [
 
 [[package]]
 name = "once_cell"
-version = "1.16.0"
+version = "1.17.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "86f0b0d4bf799edbc74508c1e8bf170ff5f41238e5f8225603ca7caaae2b7860"
+checksum = "6f61fba1741ea2b3d6a1e3178721804bb716a68a6aeba1149b5d52e3d464ea66"
 
 [[package]]
 name = "opaque-debug"
@@ -2195,9 +2212,9 @@ checksum = "a1d01941d82fa2ab50be1e79e6714289dd7cde78eba4c074bc5a4374f650dfe0"
 
 [[package]]
 name = "quick-xml"
-version = "0.26.0"
+version = "0.27.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f50b1c63b38611e7d4d7f68b82d3ad0cc71a2ad2e7f61fc10f1328d917c93cd"
+checksum = "ffc053f057dd768a56f62cd7e434c42c831d296968997e9ac1f76ea7c2d14c41"
 dependencies = [
  "memchr",
 ]
@@ -2846,9 +2863,9 @@ checksum = "cda74da7e1a664f795bb1f8a87ec406fb89a02522cf6e50620d016add6dbbf5c"
 
 [[package]]
 name = "tokio"
-version = "1.23.0"
+version = "1.24.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eab6d665857cc6ca78d6e80303a02cea7a7851e85dfbd77cbdc09bd129f1ef46"
+checksum = "1d9f76183f91ecfb55e1d7d5602bd1d979e38a3a522fe900241cf195624d67ae"
 dependencies = [
  "autocfg",
  "bytes",