diff --git a/.travis.yml b/.travis.yml
index 2d402d29cf3..735f6957b80 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,19 +3,14 @@ before_script:
   - export DISPLAY=:99.0
 bundler_args: --without development production --quiet
 env:
-  # - GEM=api DB=sqlite
   - GEM=api DB=mysql
   - GEM=api DB=postgres
-  # - GEM=backend DB=sqlite
   - GEM=backend DB=mysql
   - GEM=backend DB=postgres
-  # - GEM=core DB=sqlite
   - GEM=core DB=mysql
   - GEM=core DB=postgres
-  # - GEM=frontend DB=sqlite
   - GEM=frontend DB=mysql
   - GEM=frontend DB=postgres
-  # - GEM=sample DB=sqlite
   - GEM=sample DB=mysql
   - GEM=sample DB=postgres
 before_install: