diff --git a/lib/mime/types.rb b/lib/mime/types.rb
index 8aadacf..0ae8139 100644
--- a/lib/mime/types.rb
+++ b/lib/mime/types.rb
@@ -151,8 +151,8 @@ def [](type_id, complete: false, registered: false)
   def type_for(filename)
     results =
       Array(filename).flat_map { |fn|
-      @extension_index[fn.chomp.downcase[/\.?([^.]*?)$/, 1]]
-    }.compact.inject(Set.new, :+)
+        @extension_index[fn.chomp.downcase[/\.?([^.]*?)$/, 1]]
+      }.compact.inject(Set.new, :+)
 
     stable_sort(results)
   end
diff --git a/support/deps.rb b/support/deps.rb
index 176c4d9..9254171 100644
--- a/support/deps.rb
+++ b/support/deps.rb
@@ -35,7 +35,7 @@ def rubygems_get(gem_name: "", endpoint: "")
   end
 
   def gem_downloads(name)
-     rubygems_get(gem_name: name)["downloads"]
+    rubygems_get(gem_name: name)["downloads"]
   rescue => e
     puts "#{name} #{e.message}"
   end
diff --git a/test/test_mime_types.rb b/test/test_mime_types.rb
index 597f0e9..44f3736 100644
--- a/test/test_mime_types.rb
+++ b/test/test_mime_types.rb
@@ -38,7 +38,7 @@ def mime_types
       assert_kind_of Enumerator::Lazy, mime_types.map.lazy
     end
 
-    it 'is countable with an enumerator' do
+    it "is countable with an enumerator" do
       assert_equal 8, mime_types.each.count
       assert_equal 8, mime_types.lazy.count
     end
@@ -161,13 +161,13 @@ def mime_types
       assert_includes mime_types.type_for("xtxt"), "text/plain"
     end
 
-    it 'returns a stable order for types with equal priority' do
-      assert_equal %w(audio/webm video/webm), mime_types.type_for('foo.webm')
+    it "returns a stable order for types with equal priority" do
+      assert_equal %w[audio/webm video/webm], mime_types.type_for("foo.webm")
     end
   end
 
-  describe '#count' do
-    it 'can count the number of types inside' do
+  describe "#count" do
+    it "can count the number of types inside" do
       assert_equal 8, mime_types.count
     end
   end
diff --git a/test/test_mime_types_class.rb b/test/test_mime_types_class.rb
index 84fff6f..d82bfe4 100644
--- a/test/test_mime_types_class.rb
+++ b/test/test_mime_types_class.rb
@@ -101,8 +101,8 @@ def setup
       assert_includes MIME::Types.type_for("xtxt"), "text/plain"
     end
 
-    it 'returns a stable order for types with equal priority' do
-      assert_equal %w(audio/webm video/webm), MIME::Types.type_for('foo.webm')
+    it "returns a stable order for types with equal priority" do
+      assert_equal %w[audio/webm video/webm], MIME::Types.type_for("foo.webm")
     end
   end