diff --git a/.ruby-version b/.ruby-version
index ec1cf33..57cf282 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.6.3
+2.6.5
diff --git a/.travis.yml b/.travis.yml
index 87732b2..27d5c5b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,7 +3,7 @@ sudo: false
 
 language: ruby
 rvm:
-  - 2.6.3
+  - 2.6.5
 
 addons:
   postgresql: 10
diff --git a/Dockerfile b/Dockerfile
index af19285..a04d0cc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:2.6.3
+FROM ruby:2.6.5
 
 RUN mkdir /app
 WORKDIR /app
diff --git a/Gemfile b/Gemfile
index 2cc815b..6d6f225 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,7 +2,7 @@
 
 source 'http://rubygems.org'
 
-ruby '2.6.3'
+ruby '2.6.5'
 
 gem 'money'
 gem 'oj'