diff --git a/.github/workflows/python-publish.yml b/.github/workflows/python-publish.yml
index e56106d..0849a65 100644
--- a/.github/workflows/python-publish.yml
+++ b/.github/workflows/python-publish.yml
@@ -8,8 +8,24 @@ on:
     types: [created]
 
 jobs:
-  deploy:
+  build:
+    runs-on: ubuntu-latest
 
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.x'
+      - name: Install dependencies
+        run: |
+          pip install -r dev-requirements.txt
+      - name: Test with pytest
+        run: |
+          pytest
+
+  deploy:
+    needs: build
     runs-on: ubuntu-latest
 
     steps:
diff --git a/.github/workflows/python-test.yml b/.github/workflows/python-test.yml
index 0da76f9..c2ea678 100644
--- a/.github/workflows/python-test.yml
+++ b/.github/workflows/python-test.yml
@@ -7,14 +7,17 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - name: Set up Python 3.7
-        uses: actions/setup-python@v1
+        uses: actions/setup-python@v2
         with:
-          python-version: 3.7
+          python-version: '3.7'
       - name: Install dependencies
         run: |
           pip install -r dev-requirements.txt
+      - name: Typechecking
+        run: |
+          mypy zeropdk
       - name: Test with pytest
         run: |
-          pytest
\ No newline at end of file
+          pytest -s
\ No newline at end of file
diff --git a/dev-requirements.txt b/dev-requirements.txt
index e6dfdf1..319ffe1 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -3,3 +3,4 @@ scipy
 pytest
 pytest-cov
 klayout
+mypy
\ No newline at end of file