x509.go | 2 +-

diff --git a/x509.go b/x509.go
index 809d6851de63c0388b01a2f5d84de032301c015eef82ec99bd1a4d1eb04d4273..45f8894c6cc1d7b94439ce09440a53780275c1f6ff9e786f31a3f5219674e541 100644
--- a/x509.go
+++ b/x509.go
@@ -44,7 +44,7 @@ 	err = errors.New("no CERTIFICATE found in PEM")
 	return
 }
 
-func PrivateKeyFromFile(p string) (prv interface{}, err error) {
+func PrivateKeyFromFile(p string) (prv any, err error) {
 	var data []byte
 	data, err = os.ReadFile(p)
 	if err != nil {