diff --git a/Cargo.lock b/Cargo.lock
index 95b4b139..277babee 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -121,9 +121,9 @@ version = "0.3.1"
 
 [[package]]
 name = "prettyplease"
-version = "0.2.22"
+version = "0.2.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "479cf940fbbb3426c32c5d5176f62ad57549a0bb84773423ba8be9d089f5faba"
+checksum = "5f12335488a2f3b0a83b14edad48dca9879ce89b2edd10e80237e4e852dd645e"
 dependencies = [
  "proc-macro2",
  "syn",
@@ -187,9 +187,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.77"
+version = "2.0.67"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9f35bcdf61fd8e7be6caf75f429fdca8beb3ed76584befb503b1569faee373ed"
+checksum = "ff8655ed1d86f3af4ee3fd3263786bc14245ad17c4c7e85ba7187fb3ae028c90"
 dependencies = [
  "proc-macro2",
  "quote",