diff --git a/Gemfile.lock b/Gemfile.lock
index 86fb6f0..f4261ae 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,7 +9,7 @@ GEM
   specs:
     ast (2.4.0)
     diff-lcs (1.3)
-    google-protobuf (3.19.2)
+    google-protobuf (3.21.7)
     googleapis-common-protos-types (1.0.4)
       google-protobuf (~> 3.0)
     grpc (1.20.0)