diff --git a/.github/workflows/python-ci.yml b/.github/workflows/python-ci.yml
new file mode 100644
index 0000000..1cbd31b
--- /dev/null
+++ b/.github/workflows/python-ci.yml
@@ -0,0 +1,22 @@
+name: Python CI
+
+on: [push, pull_request]
+
+jobs:
+  pre-commit:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - uses: actions/setup-python@v3
+      with:
+        python-version: "3.10"
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        cd qoa4ml_lib
+        pip install -r requirements.txt
+        pip install -r dev_requirements.txt
+        # Uncomment when fix ydata
+        #pip install -r ml_requirements.txt
+        cd ..
+    - uses: pre-commit/action@v3.0.1
diff --git a/example/simple/test.py b/example/simple/test.py
index 6829457..65330b9 100644
--- a/example/simple/test.py
+++ b/example/simple/test.py
@@ -10,7 +10,6 @@
 
 from devtools import debug
 from qoa4ml.qoa_client import QoaClient
-from qoa4ml.reports.rohe_reports import RoheReport
 
 client1 = QoaClient(config_path="./config/client1.yaml")
 client2 = QoaClient(config_path="./config/client2.yaml")
diff --git a/qoa4ml_lib/VERSION b/qoa4ml_lib/VERSION
index 0ea3a94..7179039 100644
--- a/qoa4ml_lib/VERSION
+++ b/qoa4ml_lib/VERSION
@@ -1 +1 @@
-0.2.0
+0.2.3
diff --git a/qoa4ml_lib/qoa4ml/__init__.py b/qoa4ml_lib/qoa4ml/__init__.py
index e923901..01d1ab8 100644
--- a/qoa4ml_lib/qoa4ml/__init__.py
+++ b/qoa4ml_lib/qoa4ml/__init__.py
@@ -1,8 +1,10 @@
 # NOTE: Mark lazy module globally, only load when used
-#
-# lazy_import.lazy_module("numpy")
-# lazy_import.lazy_module("tensorflow")
-# lazy_import.lazy_module("psutil")
-# lazy_import.lazy_module("pydantic")
-# lazy_import.lazy_module("fastapi")
-# lazy_import.lazy_module("tinyflux")
+import lazy_import
+
+lazy_import.lazy_module("requests")
+lazy_import.lazy_module("tensorflow")
+lazy_import.lazy_module("numpy")
+lazy_import.lazy_module("pandas")
+lazy_import.lazy_module("fastapi")
+lazy_import.lazy_module("tinyflux")
+lazy_import.lazy_module("psutil")
diff --git a/qoa4ml_lib/qoa4ml/qoa_client.py b/qoa4ml_lib/qoa4ml/qoa_client.py
index 119f20e..694b8cd 100644
--- a/qoa4ml_lib/qoa4ml/qoa_client.py
+++ b/qoa4ml_lib/qoa4ml/qoa_client.py
@@ -152,6 +152,7 @@ def __init__(
 
     def registration(self, url: str):
         # get connector configuration by registering with the monitoring service
+
         return requests.request(
             "POST", url, headers=headers, data=self.client_config.json()
         )
diff --git a/qoa4ml_lib/qoa4ml/utils/__init__.py b/qoa4ml_lib/qoa4ml/utils/__init__.py
new file mode 100644
index 0000000..e69de29