diff --git a/.github/workflows/ci-additional.yaml b/.github/workflows/ci-additional.yaml
index fa8fa0cdee9..c6d23541a67 100644
--- a/.github/workflows/ci-additional.yaml
+++ b/.github/workflows/ci-additional.yaml
@@ -122,7 +122,7 @@ jobs:
           python xarray/util/print_versions.py
       - name: Install mypy
         run: |
-          python -m pip install "mypy" --force-reinstall
+          python -m pip install "mypy==1.11.2" --force-reinstall
 
       - name: Run mypy
         run: |
@@ -176,7 +176,7 @@ jobs:
           python xarray/util/print_versions.py
       - name: Install mypy
         run: |
-          python -m pip install "mypy" --force-reinstall
+          python -m pip install "mypy==1.11.2" --force-reinstall
 
       - name: Run mypy
         run: |