diff --git a/go.mod b/go.mod
index d5c20adc..f802c0e1 100644
--- a/go.mod
+++ b/go.mod
@@ -17,7 +17,7 @@ require (
 	github.com/sirupsen/logrus v1.9.3
 	github.com/tg123/go-htpasswd v1.2.2
 	github.com/tg123/jobobject v0.1.0
-	github.com/tg123/remotesigner v0.0.1
+	github.com/tg123/remotesigner v0.0.3
 	github.com/urfave/cli/v2 v2.27.1
 	golang.org/x/crypto v0.18.0
 	google.golang.org/grpc v1.62.0
diff --git a/go.sum b/go.sum
index cfd7de6d..c05f3643 100644
--- a/go.sum
+++ b/go.sum
@@ -175,8 +175,8 @@ github.com/tg123/go-htpasswd v1.2.2 h1:tmNccDsQ+wYsoRfiONzIhDm5OkVHQzN3w4FOBAlN6
 github.com/tg123/go-htpasswd v1.2.2/go.mod h1:FcIrK0J+6zptgVwK1JDlqyajW/1B4PtuJ/FLWl7nx8A=
 github.com/tg123/jobobject v0.1.0 h1:deOWVH+SvsnFtT/M+HFhtZ7t9GMYPzYMvvF25IIMRRE=
 github.com/tg123/jobobject v0.1.0/go.mod h1:TtbMLKdmTPY6eMo4aqDXiQWv0yTfAgDt1mxv6J9pM8o=
-github.com/tg123/remotesigner v0.0.1 h1:fFCKgpBOv0nfpWOuuWMke9vECKQu6PTrm4iktDwwMMM=
-github.com/tg123/remotesigner v0.0.1/go.mod h1:leliuGRH9ayYYwRo6JO8yg+KyWcltK69XJdLv1x7slM=
+github.com/tg123/remotesigner v0.0.3 h1:OA+yzMtlUFwkFpawyu0adG0Jq2NJzw8X7mP/+Z4OxuQ=
+github.com/tg123/remotesigner v0.0.3/go.mod h1:vborNv1HjfGLNCFJhUSmcAqqwks4AE1pE8ind6YDuII=
 github.com/urfave/cli/v2 v2.27.1 h1:8xSQ6szndafKVRmfyeUMxkNUJQMjL1F2zmsZ+qHpfho=
 github.com/urfave/cli/v2 v2.27.1/go.mod h1:8qnjx1vcq5s2/wpsqoZFndg2CE5tNFyrTvS6SinrnYQ=
 github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 h1:bAn7/zixMGCfxrRTfdpNzjtPYqr8smhKouy9mxVdGPU=
diff --git a/plugin/testplugin/main.go b/plugin/testplugin/main.go
index 804e3737..8bd1c407 100644
--- a/plugin/testplugin/main.go
+++ b/plugin/testplugin/main.go
@@ -83,12 +83,12 @@ func main() {
 						IgnoreHostKey: true,
 					}, nil
 				},
-				GrpcRemoteSignerFactory: func(metadata string) crypto.Signer {
+				GrpcRemoteSignerFactory: func(metadata string) (crypto.Signer, error) {
 					if metadata != "testplugin" {
-						panic("metadata mismatch")
+						return nil, fmt.Errorf("metadata mismatch")
 					}
 
-					return key.(crypto.Signer)
+					return key.(crypto.Signer), nil
 				},
 			}, nil
 		},