diff --git a/.github/workflows/check_label_pattern_exhaustiveness.yaml b/.github/workflows/check_label_pattern_exhaustiveness.yaml
index 2f6912766..0a78c11e1 100644
--- a/.github/workflows/check_label_pattern_exhaustiveness.yaml
+++ b/.github/workflows/check_label_pattern_exhaustiveness.yaml
@@ -17,7 +17,7 @@ jobs:
       - name: Install script's pre-requirements
         run: |
           python -m pip install -U pip
-          python -m pip install -U pathspec pyyaml rich
+          python -m pip install -U pathspec pyyaml rich typing_extensions
       - name: Check label pattern exhaustiveness
         run: |
           python .github/workflows/scripts/check_label_pattern_exhaustiveness.py