diff --git a/jwt.go b/jwt.go
index a53d712..729dcd4 100644
--- a/jwt.go
+++ b/jwt.go
@@ -7,7 +7,6 @@ import (
 	"encoding/base64"
 	"fmt"
 	"math/big"
-	"time"
 )
 
 func i2osp(n *big.Int, l int) []byte {
@@ -32,15 +31,14 @@ func es256(key *ecdsa.PrivateKey, body string) ([]byte, error) {
 	return append(i2osp(r, 32), i2osp(s, 32)...), nil
 }
 
-func GenerateBearer(key *ecdsa.PrivateKey, keyId, teamId string) (string, int64, error) {
-	iat := time.Now().Unix()
+func GenerateBearer(key *ecdsa.PrivateKey, keyId, teamId string, issuedAt int64) (string, error) {
 	h := fmt.Sprintf(`{"alg":"ES256","typ":"JWT","kid":"%s"}`, keyId)
-	p := fmt.Sprintf(`{"iss":"%s","iat":%d}`, teamId, iat)
+	p := fmt.Sprintf(`{"iss":"%s","iat":%d}`, teamId, issuedAt)
 	hp := base64.RawURLEncoding.EncodeToString([]byte(h)) + "." + base64.RawURLEncoding.EncodeToString([]byte(p))
 	sig, err := es256(key, hp)
 	if err != nil {
-		return "", 0, err
+		return "", err
 	}
 	t := hp + "." + base64.RawURLEncoding.EncodeToString([]byte(sig))
-	return t, iat, nil
+	return t, nil
 }
diff --git a/token.go b/token.go
index 7e48502..d50982f 100644
--- a/token.go
+++ b/token.go
@@ -76,7 +76,8 @@ func (t *Token) Generate() (string, error) {
 	if t.Key == nil {
 		return "", errors.New("key is nil")
 	}
-	bearer, issuedAt, err := GenerateBearer(t.Key, t.KeyID, t.TeamID)
+	issuedAt := time.Now().Unix()
+	bearer, err := GenerateBearer(t.Key, t.KeyID, t.TeamID, issuedAt)
 	if err != nil {
 		return "", err
 	}