diff --git a/src/config.ts b/src/config.ts
index 0e38904..735ff09 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -48,11 +48,10 @@ export class Config {
  * and returns undefined, allowing RAG CHAT to fall back to using an in-memory database.
  */
 const initializeRedis = () => {
-  try {
-    return Redis.fromEnv();
-  } catch {
-    return;
-  }
+  const environment = typeof process === "undefined" ? ({} as Record<string, string>) : process.env;
+  return environment.UPSTASH_REDIS_REST_URL && environment.UPSTASH_REDIS_REST_TOKEN
+    ? Redis.fromEnv()
+    : undefined;
 };
 
 /**
diff --git a/tsup.config.ts b/tsup.config.ts
index 1798cbf..ce556b0 100644
--- a/tsup.config.ts
+++ b/tsup.config.ts
@@ -4,7 +4,6 @@ export default defineConfig([
     entry: ["src/index.ts"],
     outDir: "dist",
     format: ["cjs", "esm"],
-    clean: true,
     dts: true,
   },
   {