diff --git a/.travis.yml b/.travis.yml
index 8b436eb..cd4ff8f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,6 +9,7 @@ os:
 
 haxe:
   - "3.4.0"
+  - "4.0.0"
   - development
 
 install: