diff --git a/djangosp_simplesamlidp/requirements.txt b/djangosp_simplesamlidp/requirements.txt
old mode 100755
new mode 100644
index 98a6f04..52645c7
--- a/djangosp_simplesamlidp/requirements.txt
+++ b/djangosp_simplesamlidp/requirements.txt
@@ -1,3 +1,3 @@
 Django==2.1.7
-gunicorn==19.9.0
+gunicorn==23.0.0
 django_saml2_auth==2.2.1