diff --git a/requirements_dev.txt b/requirements_dev.txt
index 75ed1bf26924a366e3aabd8da1e2e34480f647bd..1008d6efc08cb68a0315df22b6203f04daa95dc7 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -19,3 +19,4 @@ six>=1.12.0
 timeout-decorator>=0.4.1
 attrs
 gym==0.14.0
+networkx