diff --git a/pyproject.toml b/pyproject.toml
index 84dd99ed..fc4ea305 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "veadk-python"
-version = "0.5.19"
+version = "0.5.20"
 description = "Volcengine agent development kit, integrations with Volcengine cloud services."
 readme = "README.md"
 requires-python = ">=3.10"
diff --git a/veadk/memory/long_term_memory_backends/vikingdb_memory_backend.py b/veadk/memory/long_term_memory_backends/vikingdb_memory_backend.py
index 3aa6476b..e8d1ebac 100644
--- a/veadk/memory/long_term_memory_backends/vikingdb_memory_backend.py
+++ b/veadk/memory/long_term_memory_backends/vikingdb_memory_backend.py
@@ -152,7 +152,8 @@ def _get_client(self) -> VikingDBMemoryClient:
         ak, sk, sts_token = self._get_ak_sk_sts()
         if self.cloud_provider.lower() == "byteplus":
             host = f"api-knowledgebase.mlp.{self.region}.bytepluses.com"
-
+        else:
+            host = f"api-knowledgebase.mlp.{self.region}.volces.com"
         logger.info(f"Cloud provider: {self.cloud_provider.lower()}")
         logger.info(f"VikingDBLTMBackend: region={self.region}, host={host}")
 
@@ -168,7 +169,8 @@ def _get_sdk_client(self) -> VikingMem:
         ak, sk, sts_token = self._get_ak_sk_sts()
         if self.cloud_provider.lower() == "byteplus":
             host = f"api-knowledgebase.mlp.{self.region}.bytepluses.com"
-
+        else:
+            host = f"api-knowledgebase.mlp.{self.region}.volces.com"
         logger.info(f"Cloud provider: {self.cloud_provider.lower()}")
         logger.info(f"VikingDBLTMBackend: region={self.region}, host={host}")
 
diff --git a/veadk/version.py b/veadk/version.py
index 53b02943..53e48202 100644
--- a/veadk/version.py
+++ b/veadk/version.py
@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-VERSION = "0.5.19"
+VERSION = "0.5.20"