diff --git a/roles/matrix-nginx-proxy/defaults/main.yml b/roles/matrix-nginx-proxy/defaults/main.yml
index a4fbd0024..720d91504 100644
--- a/roles/matrix-nginx-proxy/defaults/main.yml
+++ b/roles/matrix-nginx-proxy/defaults/main.yml
@@ -193,6 +193,8 @@ matrix_nginx_proxy_proxy_matrix_client_api_forwarded_location_prefix_regexes: |
     (['/_synapse/oidc'] if matrix_nginx_proxy_proxy_matrix_client_api_forwarded_location_synapse_oidc_api_enabled else [])
     +
     (['/_synapse/admin'] if matrix_nginx_proxy_proxy_matrix_client_api_forwarded_location_synapse_admin_api_enabled else [])
+    +
+    (['/_synapse/metrics'] if matrix_nginx_proxy_proxy_synapse_metrics else [])
   }}
 
 # Specifies where requests for the root URI (`/`) on the `matrix.` domain should be redirected.