diff --git a/.ruby-version b/.ruby-version
index f225a78..aedc15b 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.5.2
+2.5.3
diff --git a/.travis.yml b/.travis.yml
index a2461ea..c739b44 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,6 @@
 language: ruby
 rvm:
-  - "2.5.2"
+  - "2.5.3"
 
 before_install:
   - "gem install bundler"
diff --git a/Dockerfile b/Dockerfile
index 03bc45b..9e0ae33 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:2.5.2
+FROM ruby:2.5.3
 RUN apt-get update -qq && apt-get install -y build-essential libpq-dev nodejs
 RUN mkdir /myapp
 WORKDIR /myapp
diff --git a/Gemfile b/Gemfile
index 2bd46d1..023ce4e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,7 +4,7 @@ source "https://rubygems.org"
 #don't upgrade
 gem "rails", "5.1.6"
 
-ruby "2.5.2"
+ruby "2.5.3"
 
 gem "aruba"
 gem "bcrypt"
diff --git a/Gemfile.lock b/Gemfile.lock
index 73a317c..4a96be3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -374,7 +374,7 @@ DEPENDENCIES
   unicorn
 
 RUBY VERSION
-   ruby 2.5.2p104
+   ruby 2.5.3p105
 
 BUNDLED WITH
    1.17.0.pre.2