diff --git a/requirements.txt b/requirements.txt
index 293621d..686a83e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,4 +12,5 @@ pyotp==2.2.1
 qrcode==5.3
 Flask-OAuthlib==0.9.3
 dnspython>=1.12.0
-python-saml==2.3.0
\ No newline at end of file
+python-saml==2.3.0
+pyOpenSSL>=0.15
\ No newline at end of file