diff --git a/gapic/utils/reserved_names.py b/gapic/utils/reserved_names.py
index c17e5ea324..fe7b2218bb 100644
--- a/gapic/utils/reserved_names.py
+++ b/gapic/utils/reserved_names.py
@@ -86,6 +86,7 @@
         "None",
         "try",
         "type",
+        "exec",
         # Comes from Protoplus
         "ignore_unknown_fields"
     ]