diff --git a/.ruby-version b/.ruby-version
index 276cbf9e..a4dd9dba 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.3.0
+2.7.4
diff --git a/Gemfile b/Gemfile
index 3be4ddf5..a0547fb3 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,5 @@
 source 'https://rubygems.org'
+ruby "2.7.4"
 
 git_source(:github) do |repo_name|
   repo_name = "#{repo_name}/#{repo_name}" unless repo_name.include?("/")
diff --git a/Gemfile.lock b/Gemfile.lock
index 6977b61f..c840d9ad 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -288,5 +288,8 @@ DEPENDENCIES
   uglifier (>= 1.3.0)
   web-console
 
+RUBY VERSION
+   ruby 2.7.4p191
+
 BUNDLED WITH
-   1.14.6
+   2.2.26