diff --git a/job.go b/job.go
index e54f239..c1a9540 100644
--- a/job.go
+++ b/job.go
@@ -4,6 +4,7 @@ import (
 	"archive/zip"
 	"bytes"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"io/ioutil"
 	"log"