diff --git a/Cargo.lock b/Cargo.lock
index c44dc70..0fb2ff3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -553,9 +553,9 @@ checksum = "5b40af805b3121feab8a3c29f04d8ad262fa8e0561883e7653e024ae4479e6de"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.55"
+version = "1.0.56"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1d0dd4be24fcdcfeaa12a432d588dc59bbad6cad3510c67e74a2b6b2fc950564"
+checksum = "2b63bdb0cd06f1f4dedf69b254734f9b45af66e4a031e42a7480257d9898b435"
 dependencies = [
  "unicode-ident",
 ]