diff --git a/argocd/manifests/paperless/deployment.yaml b/argocd/manifests/paperless/deployment.yaml
index 7eb2805..cc2c013 100644
--- a/argocd/manifests/paperless/deployment.yaml
+++ b/argocd/manifests/paperless/deployment.yaml
@@ -78,6 +78,8 @@ spec:
               value: "true"
             - name: PAPERLESS_SOCIAL_AUTO_SIGNUP
               value: "true"
+            - name: PAPERLESS_ACCOUNT_ALLOW_SIGNUPS
+              value: "false"
             - name: PAPERLESS_REDIRECT_LOGIN_TO_SSO
               value: "false"
           volumeMounts: