Update travis-ci setting

repeatedly · repeatedly · commit 82f15e0a36bb · 2020-04-21T00:04:43.000+09:00
Signed-off-by: Masahiro Nakagawa &lt;repeatedly@gmail.com&gt;
diff --git a/.travis.yml b/.travis.yml
@@ -5,10 +5,10 @@ addons:
   postgresql: "9.4"
 
 rvm:
-  - 2.3.6
-  - 2.4.6
-  - 2.5.5
-  - 2.6.3
+  - 2.4.10
+  - 2.5.8
+  - 2.6.6
+  - 2.7.1
   - ruby-head
 
 gemfile:
