diff --git a/Gemfile b/Gemfile
old mode 100755
new mode 100644
index 2a4a911..93d0d13
--- a/Gemfile
+++ b/Gemfile
@@ -9,7 +9,7 @@ group :test do
   gem "cucumber", "< 5" # remove the version pin when we drop Ruby 2.4 support
   gem "rake"
   gem "rspec", "~> 3.7"
-  gem "rubocop-ast", "= 1.4.1" # Drop this dependency/version when we remove ruby-2.4 support
+  gem "rubocop-ast", "1.17.0" # Drop this dependency/version when we remove ruby-2.5 support
 end
 
 group :debug do