diff --git a/.github/actions/restore-python/action.yml b/.github/actions/restore-python/action.yml
index 082539adaa..3a7b301b60 100644
--- a/.github/actions/restore-python/action.yml
+++ b/.github/actions/restore-python/action.yml
@@ -41,7 +41,7 @@ runs:
       shell: bash
       run: |
         python -m venv venv
-        ./venv/Scripts/activate
+        source ./venv/Scripts/activate
         python --version
         pip install -r requirements.txt -r requirements_test.txt
         pip install -e .
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 811cc3fe3f..6e151e633f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -214,7 +214,7 @@ jobs:
       - name: Run pytest
         if: matrix.os == 'windows-latest'
         run: |
-          ./venv/Scripts/activate
+          . ./venv/Scripts/activate.ps1
           pytest -vv --cov-report=xml --tb=native -n auto tests --ignore=tests/integration/
       - name: Run pytest
         if: matrix.os == 'ubuntu-latest' || matrix.os == 'macOS-latest'