diff --git a/Gemfile b/Gemfile
index fc7f7ed..40148ad 100644
--- a/Gemfile
+++ b/Gemfile
@@ -14,7 +14,7 @@ gemspec
 # gem 'byebug', group: [:development, :test]
 
 group :development, :test do
-  gem "ast"
+  gem "ast", "~> 2.4"
   gem "rails", require: false
   gem "rspec-rails", require: false
   gem "simplecov", require: false, group: :test
diff --git a/Gemfile.lock b/Gemfile.lock
index 8db8d75..fb9c1fb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,8 +1,8 @@
 PATH
   remote: .
   specs:
-    bd_lint (0.2.1.2)
-      ast
+    bd_lint (0.2.1.4)
+      ast (~> 2.4)
       brakeman
       bundler-audit
       execjs
@@ -53,7 +53,7 @@ GEM
       minitest (~> 5.1)
       tzinfo (~> 1.1)
     arel (8.0.0)
-    ast (2.3.0)
+    ast (2.4.0)
     brakeman (4.0.1)
     builder (3.2.3)
     bundler-audit (0.6.0)
@@ -190,7 +190,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  ast
+  ast (~> 2.4)
   bd_lint!
   brakeman
   bundler-audit
diff --git a/bd_lint.gemspec b/bd_lint.gemspec
index ff1b2e2..c0773ae 100644
--- a/bd_lint.gemspec
+++ b/bd_lint.gemspec
@@ -17,7 +17,7 @@ Gem::Specification.new do |s|
   s.files = Dir["{app,config,lib}/**/*", "MIT-LICENSE", "Rakefile", "README.md"]
 
 
-  s.add_dependency "ast"
+  s.add_dependency "ast", "~> 2.4"
   s.add_dependency "brakeman"
   s.add_dependency "bundler-audit"
   s.add_dependency "execjs"
diff --git a/lib/bd_lint/version.rb b/lib/bd_lint/version.rb
index d49fff3..87621f4 100644
--- a/lib/bd_lint/version.rb
+++ b/lib/bd_lint/version.rb
@@ -1,3 +1,3 @@
 module BdLint
-  VERSION = "0.2.1.2".freeze
+  VERSION = "0.2.1.4".freeze
 end