diff --git a/.ruby-version b/.ruby-version
index 437459c..aedc15b 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.5.0
+2.5.3
diff --git a/.travis.yml b/.travis.yml
index 2761dcc..10eb21a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,7 +13,7 @@ rvm:
   - 2.2
   - 2.3.3
   - 2.4.1
-  - 2.5.0
+  - 2.5.3
   - jruby-19mode
   - rbx-19mode
   - ruby-head