diff --git a/grafana.yaml b/grafana.yaml
index 789efa2..d3206e1 100644
--- a/grafana.yaml
+++ b/grafana.yaml
@@ -74,6 +74,8 @@ spec:
               value: "true"
             - name: GF_AUTH_GENERIC_OAUTH_ROLE_ATTRIBUTE_PATH
               value: "contains(groups[*], 'github.com:codemowers:admins') && 'Admin' || 'Viewer'"
+            - name: GF_AUTH_GENERIC_OAUTH_USE_PKCE
+              value: "false"
           volumeMounts:
             - name: grafana-storage
               mountPath: /var/lib/grafana
@@ -119,4 +121,4 @@ spec:
     - openid
     - profile
     - offline_access
-  pkce: true
+  pkce: false