diff --git a/Cargo.lock b/Cargo.lock
index 1b128dc..7f7457a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1486,9 +1486,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.49"
+version = "1.0.52"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "57a8eca9f9c4ffde41714334dee777596264c7825420f521abc92b5b5deb63a5"
+checksum = "1d0e1ae9e836cc3beddd63db0df682593d7e2d3d891ae8c9083d2113e1744224"
 dependencies = [
  "unicode-ident",
 ]