diff --git a/util/taskcluster.py b/util/taskcluster.py
index 20158c33..39560227 100644
--- a/util/taskcluster.py
+++ b/util/taskcluster.py
@@ -146,6 +146,11 @@ def main():
 
     maybe_download_tc(target_dir=args.target, tc_url=get_tc_url(args.arch, args.artifact, args.branch))
 
+    if args.artifact == "convert_graphdef_memmapped_format":
+        convert_graph_file = os.path.join(args.target, args.artifact)
+        final_stat = os.stat(convert_graph_file)
+        os.chmod(convert_graph_file, final_stat.st_mode | stat.S_IEXEC)
+    
     if '.tar.' in args.artifact:
         subprocess.check_call(['tar', 'xvf', os.path.join(args.target, args.artifact), '-C', args.target])