diff --git a/Cargo.lock b/Cargo.lock
index 70a1007..4048fe7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -589,9 +589,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.63"
+version = "1.0.66"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7b368fba921b0dce7e60f5e04ec15e565b3303972b42bcfde1d0713b881959eb"
+checksum = "18fb31db3f9bddb2ea821cde30a9f70117e3f119938b5ee630b7403aa6e2ead9"
 dependencies = [
  "unicode-ident",
 ]