diff --git a/.github/workflows/python.yml b/.github/workflows/python.yml
index 8d67dfa..80cba2b 100644
--- a/.github/workflows/python.yml
+++ b/.github/workflows/python.yml
@@ -20,12 +20,15 @@ jobs:
     - name: pip install and test
       run: |
         python -c "import sys; print(sys.version)"
-        # export STOCK_PANDAS_BUILDING=1
         make install
-        make build
-        # pip install dist/*.whl
-        # make lint
+        make build-ext
         make test
         make report
       env:
         CI: true
+    - name: test pip install
+      run: |
+        make build
+        pip install dist/*.whl
+      env:
+        CI: true
diff --git a/Makefile b/Makefile
index 13e1299..7562f2a 100644
--- a/Makefile
+++ b/Makefile
@@ -26,7 +26,9 @@ report:
 build: stock_pandas
 	rm -rf dist build
 	make build-ext
+	make build-pkg
 
+build-pkg:
 	@echo "\033[1m>> Building package... <<\033[0m"
 	@python -m build --sdist --wheel