diff --git a/Cargo.lock b/Cargo.lock
index 56a5a30e..dd602d7f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -123,9 +123,9 @@ version = "0.3.1"
 
 [[package]]
 name = "prettyplease"
-version = "0.2.20"
+version = "0.2.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f12335488a2f3b0a83b14edad48dca9879ce89b2edd10e80237e4e852dd645e"
+checksum = "479cf940fbbb3426c32c5d5176f62ad57549a0bb84773423ba8be9d089f5faba"
 dependencies = [
  "proc-macro2",
  "syn",
@@ -189,9 +189,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.67"
+version = "2.0.76"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ff8655ed1d86f3af4ee3fd3263786bc14245ad17c4c7e85ba7187fb3ae028c90"
+checksum = "578e081a14e0cefc3279b0472138c513f37b41a08d5a3cca9b6e4e8ceb6cd525"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/fiat-constify/Cargo.toml b/fiat-constify/Cargo.toml
index b86fe12c..74846045 100644
--- a/fiat-constify/Cargo.toml
+++ b/fiat-constify/Cargo.toml
@@ -16,7 +16,7 @@ readme = "README.md"
 edition = "2021"
 
 [dependencies]
-prettyplease = "0.2.19"
+prettyplease = "0.2.22"
 proc-macro2 = "1"
 quote = "1"
 syn = { version = "2", features = ["extra-traits", "full"] }