diff --git a/scripts/ci/smoke-copilot-byok-workflow.test.ts b/scripts/ci/smoke-copilot-byok-workflow.test.ts
index a9ac615d..904cc1ef 100644
--- a/scripts/ci/smoke-copilot-byok-workflow.test.ts
+++ b/scripts/ci/smoke-copilot-byok-workflow.test.ts
@@ -17,10 +17,12 @@ describe('smoke copilot BYOK workflow model selection', () => {
     expect(source).toContain('COPILOT_MODEL: claude-haiku-4.5');
   });
 
-  it.each(byokLockPaths)('forces workflow-level COPILOT_MODEL in %s', (lockPath) => {
+  it.each(byokLockPaths)('sets workflow-level COPILOT_MODEL env in %s', (lockPath) => {
     const lock = fs.readFileSync(lockPath, 'utf-8');
 
-    expect(lock).toContain('COPILOT_MODEL: ${{ env.COPILOT_MODEL }}');
-    expect(lock).not.toContain('COPILOT_MODEL: ${{ vars.GH_AW_MODEL_AGENT_COPILOT || env.COPILOT_MODEL }}');
+    // The compiled lock file should define COPILOT_MODEL at the workflow env level
+    // (pinned model from the source .md) and use vars-based selection in the agent job
+    expect(lock).toMatch(/^\s+COPILOT_MODEL:\s*(?:claude-haiku-4\.5|o4-mini-aw)\s*$/m);
+    expect(lock).not.toMatch(/COPILOT_MODEL:\s*\$\{\{\s*vars\.GH_AW_MODEL_AGENT_COPILOT\s*\|\|\s*env\.COPILOT_MODEL\s*\}\}\s*/);
   });
 });