diff --git a/repo/pack_manager.go b/repo/pack_manager.go
index 774963417..8d616d06d 100644
--- a/repo/pack_manager.go
+++ b/repo/pack_manager.go
@@ -18,7 +18,7 @@
 	"github.com/kopia/kopia/blob"
 )
 
-const flushPackIndexTimeout = 10 * time.Second
+const flushPackIndexTimeout = 10 * time.Minute
 const packObjectPrefix = "P"
 
 type packInfo struct {