diff --git a/packages/config/src/types.ts b/packages/config/src/types.ts
index 840cc36173..92293a3f26 100644
--- a/packages/config/src/types.ts
+++ b/packages/config/src/types.ts
@@ -34,8 +34,8 @@ export type Config = {
 
   keys(): string[];
 
-  get(key?: string): JsonValue;
-  getOptional(key?: string): JsonValue | undefined;
+  get<T = JsonValue>(key?: string): T;
+  getOptional<T = JsonValue>(key?: string): T | undefined;
 
   getConfig(key: string): Config;
   getOptionalConfig(key: string): Config | undefined;