diff --git a/llama_stack/providers/utils/kvstore/config.py b/llama_stack/providers/utils/kvstore/config.py
index c8ffa4857..0a21bf4ca 100644
--- a/llama_stack/providers/utils/kvstore/config.py
+++ b/llama_stack/providers/utils/kvstore/config.py
@@ -56,7 +56,7 @@ class PostgresKVStoreConfig(CommonConfig):
 
     @classmethod
     @field_validator("table_name")
-    def validate_table_name(cls, v):
+    def validate_table_name(cls, v: str) -> str:
         # PostgreSQL identifiers rules:
         # - Must start with a letter or underscore
         # - Can contain letters, numbers, and underscores