diff --git a/src/upb/gen_build_yaml.py b/src/upb/gen_build_yaml.py
index f7b82993986..3239618f442 100755
--- a/src/upb/gen_build_yaml.py
+++ b/src/upb/gen_build_yaml.py
@@ -50,6 +50,7 @@ try:
             "third_party/upb/upb/table.int.h",
             "third_party/upb/upb/upb.h",
         ],
+        'secure': False,
     }]
 except:
     pass