2 files changed, 17 insertions, 3 deletions
diff --git a/Library/Homebrew/cask/lib/hbc/cli/style.rb b/Library/Homebrew/cask/lib/hbc/cli/style.rb
index cdcc135b8..d3e44382d 100644
--- a/Library/Homebrew/cask/lib/hbc/cli/style.rb
+++ b/Library/Homebrew/cask/lib/hbc/cli/style.rb
@@ -23,12 +23,10 @@ module Hbc
         $CHILD_STATUS.success?
       end
 
-      RUBOCOP_CASK_VERSION = "~> 0.10.6".freeze
-
       def install_rubocop
         Utils.capture_stderr do
           begin
-            Homebrew.install_gem_setup_path! "rubocop-cask", RUBOCOP_CASK_VERSION, "rubocop"
+            Homebrew.install_gem_setup_path! "rubocop-cask", HOMEBREW_RUBOCOP_CASK_VERSION, "rubocop"
           rescue SystemExit
             raise CaskError, Tty.strip_ansi($stderr.string).chomp.sub(/\AError: /, "")
           end
diff --git a/Library/Homebrew/cask/spec/cask/cli/style_spec.rb b/Library/Homebrew/cask/spec/cask/cli/style_spec.rb
index b0d34576a..106bfbb44 100644
--- a/Library/Homebrew/cask/spec/cask/cli/style_spec.rb
+++ b/Library/Homebrew/cask/spec/cask/cli/style_spec.rb
@@ -1,4 +1,6 @@
 require "English"
+require "open3"
+require "rubygems"
 
 describe Hbc::CLI::Style do
   let(:args) { [] }
@@ -77,6 +79,20 @@ describe Hbc::CLI::Style do
         expect { subject }.to raise_error(Hbc::CaskError)
       end
     end
+
+    context "version" do
+      it "matches `HOMEBREW_RUBOCOP_VERSION`" do
+        stdout, status = Open3.capture2("gem", "dependency", "rubocop-cask", "--version", HOMEBREW_RUBOCOP_CASK_VERSION, "--pipe", "--remote")
+
+        expect(status).to be_a_success
+
+        requirement = Gem::Requirement.new(stdout.scan(/rubocop --version '(.*)'/).flatten.first)
+        version = Gem::Version.new(HOMEBREW_RUBOCOP_VERSION)
+
+        expect(requirement).not_to be_none
+        expect(requirement).to be_satisfied_by(version)
+      end
+    end
   end
 
   describe "#cask_paths" do