diff --git a/.github/workflows/pull-request-ci.yml b/.github/workflows/pull-request-ci.yml
index 573de45..00d773b 100644
--- a/.github/workflows/pull-request-ci.yml
+++ b/.github/workflows/pull-request-ci.yml
@@ -35,7 +35,7 @@ jobs:
         run: npm ci
 
       - name: Install Codex CLI
-        run: npm install -g @openai/codex@0.145.0
+        run: npm install -g @openai/codex@0.147.0
 
       - name: Check release versions
         run: npm run check-version
@@ -49,5 +49,15 @@ jobs:
           codex plugin marketplace add . --json
           codex plugin add cc-plugin-codex@cc-plugin-codex --json
 
+      - name: Verify Codex plugin discovery
+        if: matrix.node == '22'
+        uses: builtbyhuy/codex-plugin-check@562567df8926082eb29f940ff1e84957ecd96a38
+        with:
+          marketplace-root: .
+          plugin: cc-plugin-codex
+          codex-version: 0.147.0
+          isolation: env
+          output: ${{ runner.temp }}/codex-plugin-conformance.json
+
       - name: Run test suite
         run: npm test