diff --git a/python/examples/pipeline/simple_web_service/web_service_java.py b/python/examples/pipeline/simple_web_service/web_service_java.py
index a32ba0ee5417757d6c2210a2cfa2481d7a8a115c..da944a1df2a3265f930eb458c11709dd6b9402ee 100644
--- a/python/examples/pipeline/simple_web_service/web_service_java.py
+++ b/python/examples/pipeline/simple_web_service/web_service_java.py
@@ -36,7 +36,7 @@ class UciOp(Op):
         _LOGGER.error("UciOp::preprocess >>> log_id:{}, input:{}".format(
             log_id, input_dict))
         proc_dict = {}
-        x_value = input_dict["x"]
+        x_value = eval(input_dict["x"])
         input_dict["x"] = x_value.reshape(1, 13)
 
         return input_dict, False, None, ""
diff --git a/python/requirements.txt b/python/requirements.txt
index bfe418f5d26f43c92fc64197ea7163c7c2ef61a2..c686fdf9995afb7326f0bdc057412bf00a99cda1 100644
--- a/python/requirements.txt
+++ b/python/requirements.txt
@@ -9,6 +9,11 @@ grpcio>=1.28.1
 func-timeout>=4.3.5
 pyyaml>=1.3.0
 flask>=1.1.2
+click==7.1.2
+itsdangerous==1.1.0
+Jinja2==2.11.3
+MarkupSafe==1.1.1
+Werkzeug==1.0.1
 ujson>=2.0.3
 sentencepiece==0.1.92; platform_machine !=  "aarch64"
 sentencepiece; platform_machine ==  "aarch64"
diff --git a/python/requirements_mac.txt b/python/requirements_mac.txt
index 09a32ed0f20ee51c1b06ee9fba7abec5120ee0c6..b14fbd5fc5b779e6f2d216df434bfeb615d59b05 100644
--- a/python/requirements_mac.txt
+++ b/python/requirements_mac.txt
@@ -8,6 +8,11 @@ protobuf>=3.12.2
 func-timeout>=4.3.5
 pyyaml>=1.3.0
 flask>=1.1.2
+click==7.1.2
+itsdangerous==1.1.0
+Jinja2==2.11.3
+MarkupSafe==1.1.1
+Werkzeug==1.0.1
 ujson>=2.0.3
 grpcio-tools>=1.33.2
 grpcio>=1.33.2
diff --git a/python/setup.py.server.in b/python/setup.py.server.in
index 38e7de0883f2be14ccb20c8ee74975502df84edf..cf579db0ba082606e289eb49f8713b9441053743 100644
--- a/python/setup.py.server.in
+++ b/python/setup.py.server.in
@@ -33,7 +33,8 @@ util.gen_pipeline_code("paddle_serving_server")
 
 REQUIRED_PACKAGES = [
     'six >= 1.10.0', 'protobuf >= 3.11.0', 'grpcio <= 1.33.2', 'grpcio-tools <= 1.33.2',
-    'flask >= 1.1.1', 'func_timeout', 'pyyaml'
+    'flask >= 1.1.1', 'click==7.1.2', 'itsdangerous==1.1.0', 'Jinja2==2.11.3',
+    'MarkupSafe==1.1.1', 'Werkzeug==1.0.1', 'func_timeout', 'pyyaml'
 ]
 
 packages=['paddle_serving_server',