diff --git a/pyproject.toml b/pyproject.toml
index b4d6f81c73..ab3dd4af7a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -49,7 +49,7 @@ all = [
 
 tests = [
     "beartype==0.12.0",
-    "google-api-python-client==2.80.0",
+    "google-api-python-client==2.81.0",
     "googleapis-common-protos==1.58.0",
     "grpcio==1.50.0",
     "grpcio-health-checking==1.48.2",