diff --git a/.ruby-version b/.ruby-version
index 7ee07b8..57cf282 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.7.0-preview1
+2.6.5
diff --git a/.travis.yml b/.travis.yml
index ad132c3..600481b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,6 @@
 language: ruby
 rvm:
-  - "2.7.0-preview1"
+  - "2.6.5"
 
 before_install:
   - "phantomjs --version"
diff --git a/Dockerfile b/Dockerfile
index 5d3f7c0..d884c2e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:2.7.0-preview1
+FROM ruby:2.6.5
 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 193d419..56ea6ef 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,7 +4,7 @@ source "https://rubygems.org"
 #don't upgrade
 gem "rails", "6.0.0"
 
-ruby "2.7.0"
+ruby "2.6.5"
 
 gem "aruba"
 gem "bcrypt"
diff --git a/Gemfile.lock b/Gemfile.lock
index c75ba38..bbe0b5f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -389,7 +389,7 @@ DEPENDENCIES
   unicorn
 
 RUBY VERSION
-   ruby 2.7.0p-1
+   ruby 2.6.5p114
 
 BUNDLED WITH
-   2.1.0.pre.2
+   1.17.3