diff --git a/.travis.yml b/.travis.yml
index dc6f1d7879e..75d7ae84a25 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,8 @@
 language: node_js
 node_js:
+  - '0.10'
+  - '0.12'
+  - '4'
   - '6'
   - '7'
   - '8'
diff --git a/tsconfig.json b/tsconfig.json
index e82b8fe4532..b958b165270 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -9,7 +9,7 @@
         "preserveConstEnums": true,
         "strictNullChecks": true,
         "downlevelIteration": true,
-        "target": "es5",
+        "target": "es3",
         "lib": [
             "es6"
         ],