diff --git a/clusters/cl01tl/applications/outline/values.yaml b/clusters/cl01tl/applications/outline/values.yaml
index abfafabe4..29c7ba963 100644
--- a/clusters/cl01tl/applications/outline/values.yaml
+++ b/clusters/cl01tl/applications/outline/values.yaml
@@ -64,7 +64,7 @@ outline:
             - name: PGSSLMODE
               value: disable
             - name: REDIS_URL
-              value: redis://outline-redis-master:6379
+              value: redis://outline-valkey-master:6379
             - name: FILE_STORAGE
               value: s3
             - name: AWS_ACCESS_KEY_ID
diff --git a/clusters/cl01tl/applications/vikunja/values.yaml b/clusters/cl01tl/applications/vikunja/values.yaml
index 694dfe4da..7b4dc9365 100644
--- a/clusters/cl01tl/applications/vikunja/values.yaml
+++ b/clusters/cl01tl/applications/vikunja/values.yaml
@@ -21,7 +21,7 @@ vikunja:
             - name: VIKUNJA_REDIS_ENABLED
               value: "true"
             - name: VIKUNJA_REDIS_HOST
-              value: vikunja-redis-headless:6379
+              value: vikunja-valkey-headless:6379
             - name: VIKUNJA_REDIS_PASSWORD
               valueFrom:
                 secretKeyRef:
diff --git a/clusters/cl01tl/platform/matrix-synapse/values.yaml b/clusters/cl01tl/platform/matrix-synapse/values.yaml
index 2f9896e9e..b94389c8c 100644
--- a/clusters/cl01tl/platform/matrix-synapse/values.yaml
+++ b/clusters/cl01tl/platform/matrix-synapse/values.yaml
@@ -100,7 +100,7 @@ matrix-synapse:
   redis:
     enabled: false
   externalRedis:
-    host: matrix-synapse-redis-headless
+    host: matrix-synapse-valkey-master
     port: 6379
     existingSecret: matrix-synapse-redis-secret
     existingSecretPasswordKey: password