diff --git a/.ruby-version b/.ruby-version
index 437459c..35d16fb 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.5.0
+2.5.7
diff --git a/.travis.yml b/.travis.yml
index 73cfa9f..ec0ec10 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,11 +1,15 @@
 sudo: required
+before_install:
+  - sudo apt-get -y install curl
 
 language: ruby
-cache: bundler
+rvm: 2.5.7
+install:
+  - rvm use 2.5.7 --install
 
 services:
   - docker
 
 script:
   - docker-compose run web rake db:setup
-  - docker-compose run -e CI=true -e TRAVIS=true -e TRAVIS_BRANCH=$TRAVIS_BRANCH -e TRAVIS_COMMIT=$TRAVIS_COMMIT -e TRAVIS_JOB_NUMBER=$TRAVIS_JOB_NUMBER -e TRAVIS_PULL_REQUEST=$TRAVIS_PULL_REQUEST -e TRAVIS_JOB_ID=$TRAVIS_JOB_ID -e TRAVIS_REPO_SLUG=$TRAVIS_REPO_SLUG web bin/run-tests 
+  - docker-compose run -e CI=true -e TRAVIS=true -e TRAVIS_BRANCH=$TRAVIS_BRANCH -e TRAVIS_COMMIT=$TRAVIS_COMMIT -e TRAVIS_JOB_NUMBER=$TRAVIS_JOB_NUMBER -e TRAVIS_PULL_REQUEST=$TRAVIS_PULL_REQUEST -e TRAVIS_JOB_ID=$TRAVIS_JOB_ID -e TRAVIS_REPO_SLUG=$TRAVIS_REPO_SLUG web bin/run-tests
diff --git a/Dockerfile b/Dockerfile
index a65ed1e..42aa471 100755
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:2.5
+FROM ruby:2.5.7
 RUN curl -sL https://deb.nodesource.com/setup_9.x | bash - && apt-get update && \
   apt-get install -y build-essential zlib1g-dev libsqlite3-dev nodejs npm \
   libxml2-dev libxslt1-dev pkg-config \
diff --git a/Gemfile.lock b/Gemfile.lock
index 67a42dd..1ff4086 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -316,6 +316,3 @@ DEPENDENCIES
   tzinfo-data
   uglifier
   validate_url
-
-BUNDLED WITH
-   1.16.1