diff --git a/.travis.yml b/.travis.yml
index 6ebec86bbc1..8417f67ae61 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,6 +14,7 @@ env:
   global:
     - UGLIFYJS_TEST_ALL=1
   matrix:
+    - NODEJS_VER=chakracore/latest
     - NODEJS_VER=node/0.10
     - NODEJS_VER=node/0.12
     - NODEJS_VER=node/4
diff --git a/appveyor.yml b/appveyor.yml
index 5092a0ccb4d..c42d0b5fdb6 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,6 +1,7 @@
 environment:
   UGLIFYJS_TEST_ALL: 1
   matrix:
+    - NODEJS_VER: chakracore/latest
     - NODEJS_VER: node/0.10
     - NODEJS_VER: node/0.12
     - NODEJS_VER: node/4