diff --git a/requirements.txt b/requirements.txt
index dffdbf780c3d7d1d83ec9918bdbe8a8e5f98fb22..d2b691787f81594ac76b627c98c04ff72ad02e73 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,3 +36,4 @@ attrs==18.2.0
 more-itertools==4.2.0
 pluggy==0.8.0
 py==1.7.0
+pyOpenSSL==19.0.0