diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1aba0ab1..8eca75d5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -74,10 +74,12 @@ jobs:
       - uses: actions/setup-python@v5
         with:
           python-version: '3.12'
-      - run: |
+      - name: Install mypy and dependencies
+        run: |
           python -m pip install --upgrade pip
-          python -m pip install mypy
-          mypy .
+          python -m pip install .[complete] pyqt6
+      - name: Run mypy
+        run: mypy --install-types --non-interactive .
 
   release:
     name: Release
diff --git a/pyproject.toml b/pyproject.toml
index 6541e947..ee3eb9c6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -232,6 +232,7 @@ check_untyped_defs = false
 exclude = [
     "^docs/",
     "^tests/",
+    "^build/",
     "_deprecated/",
     "interactive/curvefittingtool.py",
     "io/plugins/",