diff --git a/.github/workflows/pythonpackage.yml b/.github/workflows/pythonpackage.yml
index b111573e..e42d7b87 100644
--- a/.github/workflows/pythonpackage.yml
+++ b/.github/workflows/pythonpackage.yml
@@ -25,7 +25,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install mypy==0.990
+        pip install mypy==1.5.1
         if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
     - name: mypy
       run: |