diff --git a/.travis.yml b/.travis.yml
index 71cf0423..e6a3f873 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,9 +10,10 @@ rvm:
   - 1.9.3
   - 2.0.0
   - 2.1.10
-  - 2.2.8
-  - 2.3.5
-  - 2.4.2
+  - 2.2.9
+  - 2.3.6
+  - 2.4.3
+  - 2.5.0
   - jruby-head
   - rbx-2
   - ruby-head
diff --git a/README.md b/README.md
index a8665b68..6ffd18cf 100644
--- a/README.md
+++ b/README.md
@@ -72,10 +72,10 @@ implementations:
 * Ruby 1.9.2
 * Ruby 1.9.3
 * Ruby 2.0.0
-* Ruby 2.1
-* Ruby 2.2.8
-* Ruby 2.3.5
-* Ruby 2.4.2
+* Ruby 2.1.10
+* Ruby 2.2.9
+* Ruby 2.4.3
+* Ruby 2.5.0
 * [JRuby][]
 * [Rubinius][]
 * [MacRuby][] (not tested on Travis CI)