diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4bb47b7..4be09ce 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -55,7 +55,7 @@ jobs:
       - name: Install dependencies with pytest${{ matrix.pytest-version }}
         run: |
           if [ "${{ matrix.config }}" == "valgrind" ]; then
-            export PYTEST_CODSPEED_FORCE_EXTENSION=1
+            export PYTEST_CODSPEED_FORCE_EXTENSION_BUILD=1
           fi
           uv sync --all-extras --dev --locked --verbose
           uv pip install "pytest${{ matrix.pytest-version }}"
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 8ffe132..3b0e93d 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -33,6 +33,8 @@ jobs:
 
       - name: Build the library
         run: uv build --wheel --out-dir dist/
+        env:
+          PYTEST_CODSPEED_FORCE_EXTENSION_BUILD: 1
 
       - uses: actions/upload-artifact@v4
         with:
diff --git a/setup.py b/setup.py
index 0325dba..e04ca78 100644
--- a/setup.py
+++ b/setup.py
@@ -23,7 +23,9 @@
     "arm64",
 ]
 
-IS_EXTENSION_REQUIRED = os.environ.get("PYTEST_CODSPEED_FORCE_EXTENSION") is not None
+IS_EXTENSION_REQUIRED = (
+    os.environ.get("PYTEST_CODSPEED_FORCE_EXTENSION_BUILD") is not None
+)
 if IS_EXTENSION_REQUIRED and not IS_EXTENSION_BUILDABLE:
     raise ValueError(
         "The extension is required but the current platform is not supported"