diff --git a/.travis.yml b/.travis.yml
index c5df7d87b5f..b70b85af1ec 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -82,10 +82,10 @@ jobs:
       script: ./scripts/ci/test_ref_doc.sh
       env: PURPOSE='RefDocVerify'
       python: 3.6
-    #- stage: verify
-    #  env: PURPOSE='Load extension commands'
-    #  script: ./scripts/ci/test_extensions.sh
-    #  python: 3.6
+    - stage: verify
+      env: PURPOSE='Load extension commands'
+      script: ./scripts/ci/test_extensions.sh
+      python: 3.6
     - stage: publish
       script: ./scripts/ci/publish.sh
       python: 3.6