diff --git a/clsx.gemspec b/clsx.gemspec
index 5e3ff54..7e71d40 100644
--- a/clsx.gemspec
+++ b/clsx.gemspec
@@ -4,7 +4,7 @@ require_relative "lib/clsx/version"
 
 Gem::Specification.new do |spec|
   spec.name = "clsx"
-  spec.version = Clsx::VERSION
+  spec.version = CLSX::VERSION
   spec.authors = ["Seth Horsley"]
   spec.email = ["isethi@me.com"]
 
diff --git a/lib/clsx.rb b/lib/clsx.rb
index 3a724c4..09c9b0a 100644
--- a/lib/clsx.rb
+++ b/lib/clsx.rb
@@ -3,7 +3,7 @@
 require_relative "clsx/version"
 require "clsx/railtie" if defined?(Rails)
 
-module Clsx
+module CLSX
   class Error < StandardError; end
 
   def self.clsx(*args)
diff --git a/lib/clsx/railtie.rb b/lib/clsx/railtie.rb
index 199156b..9cbcade 100644
--- a/lib/clsx/railtie.rb
+++ b/lib/clsx/railtie.rb
@@ -12,7 +12,7 @@ class Railtie < Rails::Railtie
 
   module Helper
     def clsx(*)
-      Clsx.clsx(*)
+      CLSX.clsx(*)
     end
   end
 end
diff --git a/lib/clsx/version.rb b/lib/clsx/version.rb
index d094258..461b40f 100644
--- a/lib/clsx/version.rb
+++ b/lib/clsx/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
-module Clsx
+module CLSX
   VERSION = "0.1.0"
 end
diff --git a/sig/clsx.rbs b/sig/clsx.rbs
index 3fe9490..0e3aac1 100644
--- a/sig/clsx.rbs
+++ b/sig/clsx.rbs
@@ -1,4 +1,4 @@
-module Clsx
+module CLSX
   VERSION: String
   # See the writing guide of rbs: https://github.com/ruby/rbs#guides
 end
diff --git a/test/test_clsx.rb b/test/test_clsx.rb
index 85c9522..8d6f4f9 100644
--- a/test/test_clsx.rb
+++ b/test/test_clsx.rb
@@ -4,26 +4,26 @@
 
 class ClsxTest < Minitest::Test
   def test_strings
-    assert_equal "foo bar baz", Clsx.clsx("foo", true && "bar", "baz")
+    assert_equal "foo bar baz", CLSX.clsx("foo", true && "bar", "baz")
   end
 
   def test_objects
-    assert_equal "foo baz", Clsx.clsx({foo: true, bar: false, baz: true})
+    assert_equal "foo baz", CLSX.clsx({foo: true, bar: false, baz: true})
   end
 
   def test_objects_variadic
-    assert_equal "foo --foobar", Clsx.clsx({foo: true}, {bar: false}, nil, {"--foobar" => "hello"})
+    assert_equal "foo --foobar", CLSX.clsx({foo: true}, {bar: false}, nil, {"--foobar" => "hello"})
   end
 
   def test_arrays
-    assert_equal "foo bar", Clsx.clsx(["foo", 0, false, "bar"])
+    assert_equal "foo bar", CLSX.clsx(["foo", 0, false, "bar"])
   end
 
   def test_arrays_variadic
-    assert_equal "foo bar baz hello there", Clsx.clsx(["foo"], ["", 0, false, "bar"], [["baz", [["hello"], "there"]]])
+    assert_equal "foo bar baz hello there", CLSX.clsx(["foo"], ["", 0, false, "bar"], [["baz", [["hello"], "there"]]])
   end
 
   def test_kitchen_sink
-    assert_equal "foo bar hello world cya", Clsx.clsx("foo", [1 && "bar", {baz: false, bat: nil}, ["hello", ["world"]]], "cya")
+    assert_equal "foo bar hello world cya", CLSX.clsx("foo", [1 && "bar", {baz: false, bat: nil}, ["hello", ["world"]]], "cya")
   end
 end