.travis.yml in rasti-db-1.3.1 vs .travis.yml in rasti-db-1.4.0

@@ -2,14 +2,15 @@
 
 rvm:
   - 2.0
   - 2.1
   - 2.2
-  - 2.3.0
-  - 2.4.0
-  - 2.5.0
-  - 2.6.0
+  - 2.3
+  - 2.4
+  - 2.5
+  - 2.6
+  - 2.7
   - jruby-9.1.7.0
   - jruby-9.1.16.0
   - ruby-head
   - jruby-head
 
@@ -18,10 +19,6 @@
   allow_failures:
     - rvm: ruby-head
     - rvm: jruby-head
 
 jdk:
-  - openjdk8
-
-before_install:
-  - rvm all-gemsets do gem uninstall bundler -ax || true
-  - gem install bundler -v "< 2"
+  - openjdk8
\ No newline at end of file