diff --git a/.github/workflows/run-test.yml b/.github/workflows/run-test.yml
index c1b26723..6ac998aa 100644
--- a/.github/workflows/run-test.yml
+++ b/.github/workflows/run-test.yml
@@ -27,7 +27,7 @@ jobs:
         python-version: ${{ matrix.python-version }}
     - name: Install ruptures
       run: |
-        python -m pip install --upgrade pip
+        python -m pip install pip==21.0.1
         python -m pip install .[test]
     - name: Test with pytest
       run: |