diff --git a/config/kube_config.py b/config/kube_config.py
index 15a9ccd5..f85b55ce 100644
--- a/config/kube_config.py
+++ b/config/kube_config.py
@@ -332,7 +332,7 @@ def _refresh_oidc(self, provider):
         response = client.request(
             method="GET",
             url="%s/.well-known/openid-configuration"
-            % provider['config']['idp-issuer-url']
+            % provider['config']['idp-issuer-url'].rstrip('/')
         )
 
         if response.status != 200: