diff --git a/tensorflow/tools/pip_package/setup.py b/tensorflow/tools/pip_package/setup.py
index 9e01575db68e61a279e15b48573a51177a308849..864fec26ac50d215881afaa8ddd70fa0c53dfbe9 100644
--- a/tensorflow/tools/pip_package/setup.py
+++ b/tensorflow/tools/pip_package/setup.py
@@ -54,7 +54,7 @@ REQUIRED_PACKAGES = [
     'astor >= 0.6.0',
     'backports.weakref >= 1.0rc1;python_version<"3.4"',
     'enum34 >= 1.1.6;python_version<"3.4"',
-    'gast >= 0.2.0',
+    'gast == 0.2.2',
     'google_pasta >= 0.1.6',
     'keras_applications >= 1.0.8',
     'keras_preprocessing >= 1.0.5',