diff --git a/clusters/cl01tl/platform/matrix-synapse/values.yaml b/clusters/cl01tl/platform/matrix-synapse/values.yaml
index addb421c5..77bf8f8a8 100644
--- a/clusters/cl01tl/platform/matrix-synapse/values.yaml
+++ b/clusters/cl01tl/platform/matrix-synapse/values.yaml
@@ -230,10 +230,10 @@ mautrix-discord:
       advancedMounts:
         main:
           main:
-            - path: /data/config.yml
+            - path: /data/config.yaml
               readOnly: true
               mountPropagation: None
-              subPath: config.yml
+              subPath: config.yaml
 mautrix-whatsapp:
   global:
     nameOverride: mautrix-whatsapp
@@ -281,10 +281,10 @@ mautrix-whatsapp:
       advancedMounts:
         main:
           main:
-            - path: /data/config.yml
+            - path: /data/config.yaml
               readOnly: true
               mountPropagation: None
-              subPath: config.yml
+              subPath: config.yaml
 redis:
   architecture: standalone
   auth: