diff --git a/Library/Homebrew/cask/dsl/version.rb b/Library/Homebrew/cask/dsl/version.rb
index 5cdbf45ee8..e93a886f84 100644
--- a/Library/Homebrew/cask/dsl/version.rb
+++ b/Library/Homebrew/cask/dsl/version.rb
@@ -5,7 +5,6 @@ module Cask
         "." => :dots,
         "-" => :hyphens,
         "_" => :underscores,
-        "/" => :slashes,
       }.freeze
 
       DIVIDER_REGEX = /(#{DIVIDERS.keys.map { |v| Regexp.quote(v) }.join('|')})/.freeze
diff --git a/Library/Homebrew/test/cask/dsl/version_spec.rb b/Library/Homebrew/test/cask/dsl/version_spec.rb
index 8b8b984740..ace2e09373 100644
--- a/Library/Homebrew/test/cask/dsl/version_spec.rb
+++ b/Library/Homebrew/test/cask/dsl/version_spec.rb
@@ -171,11 +171,6 @@ describe Cask::DSL::Version, :cask do
                        "1.2.3_4-5" => "1_2_3_4-5"
     end
 
-    describe "#dots_to_slashes" do
-      include_examples "version expectations hash", :dots_to_slashes,
-                       "1.2.3_4-5" => "1/2/3_4-5"
-    end
-
     describe "#hyphens_to_dots" do
       include_examples "version expectations hash", :hyphens_to_dots,
                        "1.2.3_4-5" => "1.2.3_4.5"
@@ -186,11 +181,6 @@ describe Cask::DSL::Version, :cask do
                        "1.2.3_4-5" => "1.2.3_4_5"
     end
 
-    describe "#hyphens_to_slashes" do
-      include_examples "version expectations hash", :hyphens_to_slashes,
-                       "1.2.3_4-5" => "1.2.3_4/5"
-    end
-
     describe "#underscores_to_dots" do
       include_examples "version expectations hash", :underscores_to_dots,
                        "1.2.3_4-5" => "1.2.3.4-5"
@@ -201,11 +191,6 @@ describe Cask::DSL::Version, :cask do
                        "1.2.3_4-5" => "1.2.3-4-5"
     end
 
-    describe "#underscores_to_slashes" do
-      include_examples "version expectations hash", :underscores_to_slashes,
-                       "1.2.3_4-5" => "1.2.3/4-5"
-    end
-
     describe "#no_dots" do
       include_examples "version expectations hash", :no_dots,
                        "1.2.3_4-5" => "123_4-5"