diff --git a/hosts/heather/arion-compose.nix b/hosts/heather/arion-compose.nix
index 291bbda..b52cc5e 100644
--- a/hosts/heather/arion-compose.nix
+++ b/hosts/heather/arion-compose.nix
@@ -244,6 +244,9 @@ in
         POSTGRES_DB = "teable";
         POSTGRES_USER = "teable";
         REDIS_URL = "redis://teable-redis:6379";
+        # Newer Teable releases validate the explicit cache configuration.
+        BACKEND_CACHE_PROVIDER = "redis";
+        BACKEND_CACHE_REDIS_URI = "redis://teable-redis:6379";
         PUBLIC_DOMAIN = "teable.iscg.dev";
         PUBLIC_ORIGIN = "https://teable.iscg.dev";
       };