diff --git a/Cargo.lock b/Cargo.lock
index 96abbb2e..0309ef6b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -772,9 +772,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.50"
+version = "1.0.66"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6ef7d57beacfaf2d8aee5937dab7b7f28de3cb8b1828479bb5de2a7106f2bae2"
+checksum = "18fb31db3f9bddb2ea821cde30a9f70117e3f119938b5ee630b7403aa6e2ead9"
 dependencies = [
  "unicode-ident",
 ]