diff --git a/lib.go b/lib.go
index 4ae73d5..c38b137 100644
--- a/lib.go
+++ b/lib.go
@@ -156,6 +156,7 @@ func (checker *SchemaChecker) Check(schemaKind string, file string) (string, err
 		if err != nil {
 			return "", errors.Wrap(err, file)
 		}
+		defer resp.Body.Close()
 		var buf bytes.Buffer
 		_, err = io.Copy(&buf, resp.Body)
 		if err != nil {