diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 40c3b311..57f004a1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -242,17 +242,17 @@ jobs:
       - name: Install Python 3.4 dependencies
         if: ${{ contains(matrix.python-version, '3.4') }}
         # certifi uses the 'typing' from Python 3.5 module starting in 2022.5.18
-        run: pip install certifi==2021.10.8 typing-extensions<4
+        run: pip install certifi==2021.10.8 "typing-extensions<4"
 
       - name: Install Python 3.5 dependencies
         if: ${{ contains(matrix.python-version, '3.5') }}
         # typing-extensions dropped support for Python 3.5 in version 4
-        run: pip install typing-extensions<4
+        run: pip install "typing-extensions<4"
 
       - name: Install Python 3.6 dependencies
         if: ${{ contains(matrix.python-version, '3.6') }}
         # typing-extensions dropped support for Python 3.6 in version 4.2
-        run: pip install typing-extensions<4.2
+        run: pip install "typing-extensions<4.2"
 
       - name: Run tests
         run: python setup.py test