diff --git a/task/task.go b/task/task.go
index 229b59ac..04829675 100644
--- a/task/task.go
+++ b/task/task.go
@@ -1,6 +1,7 @@
 package task
 
 import (
+	"sync"
 	"sync/atomic"
 
 	"github.com/aptly-dev/aptly/aptly"