diff --git a/.github/workflows/bleeding_edge.yml b/.github/workflows/bleeding_edge.yml
index 4f0a314..b0707dd 100644
--- a/.github/workflows/bleeding_edge.yml
+++ b/.github/workflows/bleeding_edge.yml
@@ -54,7 +54,15 @@ jobs:
       run: |
         source .venv/bin/activate
         pytest --color=yes --pyargs inifix --doctest-modules
-    - name: Run concurrency tests
+    - name: Run concurrency tests (GIL)
+      if: ${{ ! matrix.free-threading }}
       run: |
         source .venv/bin/activate
         pytest --color=yes --count 100 tests/test_concurrent.py
+    - name: Run concurrency tests (free-threading)
+      if: matrix.free-threading
+      run: |
+        source .venv/bin/activate
+        pytest --color=yes --count 100 tests/test_concurrent.py
+      env:
+        PYTHON_GIL: 0