diff --git a/mf/bundle.go b/mf/bundle.go
index ef507ba..702318b 100644
--- a/mf/bundle.go
+++ b/mf/bundle.go
@@ -83,7 +83,7 @@ func (b *bundle) LoadDir(dir fs.FS) error {
 			return nil
 		}
 
-		if path.Ext(f.Name()) != ".yaml" {
+		if path.Ext(f.Name()) != ".yaml" && path.Ext(f.Name()) != ".yml" {
 			return nil
 		}
 
diff --git a/mf/bundle_test.go b/mf/bundle_test.go
index 8dc7ffa..7eab3b0 100644
--- a/mf/bundle_test.go
+++ b/mf/bundle_test.go
@@ -125,9 +125,11 @@ func TestBundle_LoadDir(t *testing.T) {
 	require.NoError(t, b.LoadDir(fstest.MapFS{
 		"messages.en.yaml": {Data: []byte("foo: bar")},
 		"messages.es.yaml": {Data: []byte("foo: bar")},
+		"messages.ru.yml":  {Data: []byte("foo: bar")},
 	}), "no error on normal yaml files")
 	assert.NotNil(t, b.dictionaries[language.English])
 	assert.NotNil(t, b.dictionaries[language.Spanish])
+	assert.NotNil(t, b.dictionaries[language.Russian])
 }
 
 func TestBundle_Translator(t *testing.T) {