diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 0c7a9e5bd1f..b2087d1e4c2 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -94,6 +94,11 @@ jobs:
         path: ~/cache-libimagequant
         key: ${{ runner.os }}-libimagequant-${{ hashFiles('depends/install_imagequant.sh') }}
 
+    - name: Install Linux dependencies (disable-gil)
+      if: endsWith(matrix.python-version, '-dev')
+      run: |
+        python3 -m pip install git+https://github.com/pypa/packaging.git
+
     - name: Install Linux dependencies
       if: startsWith(matrix.os, 'ubuntu')
       run: |