diff --git a/Cargo.lock b/Cargo.lock
index 55d24ea..1bccbe0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -310,9 +310,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.42"
+version = "1.0.50"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c278e965f1d8cf32d6e0e96de3d3e79712178ae67986d9cf9151f51e95aac89b"
+checksum = "6ef7d57beacfaf2d8aee5937dab7b7f28de3cb8b1828479bb5de2a7106f2bae2"
 dependencies = [
  "unicode-ident",
 ]