diff --git a/tools/buildgen/mako_renderer.py b/tools/buildgen/mako_renderer.py
index 522eaea1012..06ee30ff2a3 100755
--- a/tools/buildgen/mako_renderer.py
+++ b/tools/buildgen/mako_renderer.py
@@ -18,7 +18,7 @@ Just a wrapper around the mako rendering library.
 """
 
 import getopt
-import importlib
+import importlib.util
 import os
 import pickle
 import shutil