diff --git a/requirements.txt b/requirements.txt
index 377d1fd..db7938e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-gym
+gym==0.9.1
 mujoco-py==0.5.7
 numpy
-tensorflow>=1.1.0
+tensorflow<=1.14.0