diff --git a/Cargo.lock b/Cargo.lock
index 6a2bc7e9..d70ff0d0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -125,9 +125,9 @@ version = "0.3.0"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.51"
+version = "1.0.52"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5d727cae5b39d21da60fa540906919ad737832fe0b1c165da3a34d6548c849d6"
+checksum = "1d0e1ae9e836cc3beddd63db0df682593d7e2d3d891ae8c9083d2113e1744224"
 dependencies = [
  "unicode-ident",
 ]