diff --git a/requirements/requirements.txt b/requirements/requirements.txt
index d99c6ee27..c43046d3c 100644
--- a/requirements/requirements.txt
+++ b/requirements/requirements.txt
@@ -89,3 +89,4 @@ flower==0.9.3
 channels-redis==2.4.0
 channels==2.3.0
 daphne==2.3.0
+py-radius==2.0.2.post1