diff --git a/pyproject.toml b/pyproject.toml
index ed345a4f..68e988ea 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "veadk-python"
-version = "0.5.28"
+version = "0.5.29"
 description = "Volcengine agent development kit, integrations with Volcengine cloud services."
 readme = "README.md"
 requires-python = ">=3.10"
@@ -16,7 +16,7 @@ dependencies = [
     "a2a-sdk>=0.3.7", # For Google Agent2Agent protocol
     "deprecated==1.2.18",
     "google-adk>=1.19.0", # For basic agent architecture
-    "litellm>=1.74.3", # For model inference
+    "litellm>=1.74.3,<=1.82.6", # For model inference
     "loguru==0.7.3", # For better logging
     "opentelemetry-exporter-otlp==1.37.0",
     "opentelemetry-instrumentation-logging>=0.56b0",
diff --git a/veadk/version.py b/veadk/version.py
index 0336ebc1..63b72cc4 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 = "0.5.28"
+VERSION = "0.5.29"