diff --git a/go.mod b/go.mod
index c32bc22..7c71850 100644
--- a/go.mod
+++ b/go.mod
@@ -7,4 +7,5 @@ require github.com/xeipuuv/gojsonschema v1.2.0
 require (
 	github.com/xeipuuv/gojsonpointer v0.0.0-20190905194746-02993c407bfb // indirect
 	github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415 // indirect
+	sigs.k8s.io/yaml v1.4.0 // indirect
 )
diff --git a/go.sum b/go.sum
index cf18c03..7260172 100644
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,6 @@
 github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
@@ -12,3 +13,6 @@ github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415 h1:EzJWgHo
 github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415/go.mod h1:GwrjFmJcFw6At/Gs6z4yjiIwzuJ1/+UwLxMQDVQXShQ=
 github.com/xeipuuv/gojsonschema v1.2.0 h1:LhYJRs+L4fBtjZUfuSZIKGeVu0QRy8e5Xi7D17UxZ74=
 github.com/xeipuuv/gojsonschema v1.2.0/go.mod h1:anYRn/JVcOK2ZgGU+IjEV4nwlhoK5sQluxsYJ78Id3Y=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+sigs.k8s.io/yaml v1.4.0 h1:Mk1wCc2gy/F0THH0TAp1QYyJNzRm2KCLy3o5ASXVI5E=
+sigs.k8s.io/yaml v1.4.0/go.mod h1:Ejl7/uTz7PSA4eKMyQCUTnhZYNmLIl+5c2lQPGR2BPY=
diff --git a/schemautils/schemautils_test.go b/schemautils/schemautils_test.go
index 4dde605..66767c7 100644
--- a/schemautils/schemautils_test.go
+++ b/schemautils/schemautils_test.go
@@ -4,10 +4,13 @@ import (
 	"commonmeta/metadata"
 	"commonmeta/schemautils"
 	"encoding/json"
+
 	"fmt"
 	"log"
 	"os"
 	"testing"
+
+	"sigs.k8s.io/yaml"
 )
 
 func TestJSONSchemaErrors(t *testing.T) {
@@ -60,8 +63,11 @@ func TestJSONSchemaErrorsTestdata(t *testing.T) {
 	}
 
 	testCases := []testCase{
+		{meta: "journal_article.commonmeta.json", schema: "commonmeta_v0.12", want: 2},
 		{meta: "citeproc.json", schema: "csl-data", want: 0},
 		{meta: "datacite.json", schema: "datacite-v4.5", want: 3},
+		{meta: "datacite-instrument.json", schema: "datacite-v4.5", want: 27},
+		{meta: "datacite_software_version.json", schema: "datacite-v4.5", want: 7},
 	}
 	for _, tc := range testCases {
 		data, err := os.ReadFile("../testdata/" + tc.meta)
@@ -75,3 +81,31 @@ func TestJSONSchemaErrorsTestdata(t *testing.T) {
 		}
 	}
 }
+
+func TestJSONSchemaErrorsTestdataYAML(t *testing.T) {
+	t.Parallel()
+	type testCase struct {
+		meta   string
+		schema string
+		want   int
+	}
+
+	testCases := []testCase{
+		{meta: "CITATION.cff", schema: "cff_v1.2.0", want: 0},
+	}
+	for _, tc := range testCases {
+		data, err := os.ReadFile("../testdata/" + tc.meta)
+		if err != nil {
+			fmt.Print(err)
+		}
+		YAMLdata, err := yaml.YAMLToJSON(data)
+		if err != nil {
+			fmt.Print(err)
+		}
+		result := schemautils.JSONSchemaErrors(YAMLdata, tc.schema)
+		got := len(result.Errors())
+		if tc.want != got {
+			t.Errorf("want %d, got %d", tc.want, got)
+		}
+	}
+}