diff --git a/Cargo.lock b/Cargo.lock
index ec9dc40..d2cff1a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -449,9 +449,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.77"
+version = "1.0.78"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9f9b1511a24c627ab3e92b48be4b32f8d0ea91ee351edd87fbf650aadd336340"
+checksum = "e2422ad645d89c99f8f3e6b88a9fdeca7fabeac836b1002371c4367c8f984aae"
 dependencies = [
  "unicode-ident",
 ]