Add API version for travis
diff --git a/.travis.yml b/.travis.yml
index 556cbfd..89b5bd9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,6 +6,8 @@
   matrix:
     - API_VERSION=2.8
     - API_VERSION=2.8.1
+    - API_VERSION=2.8.2
+    - API_VERSION=2.8.3
 
 before_script: ./script/before_build.sh