diff --git a/mjwt.go b/mjwt.go
index e203dfc..7a9bd60 100644
--- a/mjwt.go
+++ b/mjwt.go
@@ -12,6 +12,7 @@ var ErrClaimTypeMismatch = errors.New("claim type mismatch")
 
 type Provider interface {
 	GenerateJwt(sub, id string, dur time.Duration, claims Claims) (string, error)
+	SignJwt(claims jwt.Claims) (string, error)
 	VerifyJwt(token string, claims baseTypeClaim) (*jwt.Token, error)
 	Issuer() string
 }
diff --git a/verifier.go b/verifier.go
index 739c73d..c38af89 100644
--- a/verifier.go
+++ b/verifier.go
@@ -45,6 +45,10 @@ func (d *defaultMJwtVerifier) GenerateJwt(_, _ string, _ time.Duration, _ Claims
 	return "", ErrCannotGenerateMJwtToken
 }
 
+func (d *defaultMJwtVerifier) SignJwt(_ jwt.Claims) (string, error) {
+	return "", ErrCannotGenerateMJwtToken
+}
+
 func (d *defaultMJwtVerifier) VerifyJwt(token string, claims baseTypeClaim) (*jwt.Token, error) {
 	withClaims, err := jwt.ParseWithClaims(token, claims, func(token *jwt.Token) (interface{}, error) {
 		return d.pub, nil