diff --git a/.travis.yml b/.travis.yml
index e042d1f..3e2cceb 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -50,7 +50,13 @@ jobs:
         - ./generate-stackbrew-library.sh
 
     - stage: test images
-      env: VERSION=12.0 VARIANT=fpm-alpine ARCH=amd64
+      env: VERSION=15.0-beta VARIANT=fpm-alpine ARCH=amd64
+    - env: VERSION=15.0-beta VARIANT=fpm-alpine ARCH=i386
+    - env: VERSION=15.0-beta VARIANT=fpm ARCH=amd64
+    - env: VERSION=15.0-beta VARIANT=fpm ARCH=i386
+    - env: VERSION=15.0-beta VARIANT=apache ARCH=amd64
+    - env: VERSION=15.0-beta VARIANT=apache ARCH=i386
+    - env: VERSION=12.0 VARIANT=fpm-alpine ARCH=amd64
     - env: VERSION=12.0 VARIANT=fpm-alpine ARCH=i386
     - env: VERSION=12.0 VARIANT=fpm ARCH=amd64
     - env: VERSION=12.0 VARIANT=fpm ARCH=i386