diff --git a/Cargo.lock b/Cargo.lock
index 01ca942..4efa3d2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -685,9 +685,9 @@ checksum = "d2d778539881515d37cd91925d169f4a351120c5a1b44fce2b7c462b0d7f4ec6"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.54"
+version = "1.0.78"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e472a104799c74b514a57226160104aa483546de37e839ec50e3c2e41dd87534"
+checksum = "e2422ad645d89c99f8f3e6b88a9fdeca7fabeac836b1002371c4367c8f984aae"
 dependencies = [
  "unicode-ident",
 ]