diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..0b79394
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,35 @@
+---
+name: CI
+
+on:
+    push:
+        branches:
+            - main
+    workflow_dispatch:
+
+jobs:
+    unit-test:
+        runs-on: ${{ matrix.os }}
+        strategy:
+            fail-fast: false
+            matrix:
+                os: [ubuntu-latest, windows-latest, macos-latest]
+                python-version: [3.x]
+        steps:
+            - uses: actions/checkout@v3
+            - name: setup python
+              uses: actions/setup-python@v3
+              with:
+                  python-version: ${{ matrix.python-version }}
+
+            - name: display test env
+              run: python3 -c "import sys; print(sys.platform)" && python -V
+
+            - name: install dependencies
+              run: python3 -m pip install -r requirements.txt
+
+            - name: install the package
+              run: python3 -m pip install .
+
+            - name: unit test
+              run: pytest
diff --git a/requirements.txt b/requirements.txt
index 1c3b798..c6b92d8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
-pytest==2.8.3
-pep8==1.6.2
+pytest>=2.8.3
+pep8>=1.6.2
 marshmallow>=2.15.1
-beautifulsoup4==4.4.1
-ordereddict==1.1
-lxml==4.6.5
-six==1.9.0
+beautifulsoup4>=4.4.1
+ordereddict>=1.1
+lxml>=4.6.5
+six>=1.9.0