diff --git a/.github/workflows/sonar-fix.yml b/.github/workflows/sonar-fix.yml
index 069bf6c..74486c8 100644
--- a/.github/workflows/sonar-fix.yml
+++ b/.github/workflows/sonar-fix.yml
@@ -344,7 +344,7 @@ jobs:
     name: "Fix"
     needs: detect-and-resolve
     if: needs.detect-and-resolve.outputs.should_run == 'true'
-    uses: jon-lipsky-sonarsource/sonar-fix/.github/workflows/fix.yml@main
+    uses: jon-lipsky-sonarsource/sonar-fix/.github/workflows/fix.yml@v1
     with:
       sonar-project-key: ${{ vars.SONAR_PROJECT_KEY }}
       sonar-org: ${{ vars.SONAR_ORG || vars.COPILOT_MCP_SONAR_ORG }}
diff --git a/src/main/java/clipper2/SonarFixProbeV1Codex.java b/src/main/java/clipper2/SonarFixProbeV1Codex.java
new file mode 100644
index 0000000..a80cd09
--- /dev/null
+++ b/src/main/java/clipper2/SonarFixProbeV1Codex.java
@@ -0,0 +1,7 @@
+package clipper2;
+
+public class SonarFixProbeV1Codex {
+    public void run() {
+        // Intentionally empty validation probe.
+    }
+}