diff --git a/priv/repo/migrations/20200415181818_update_markers.exs b/priv/repo/migrations/20200415181818_update_markers.exs
index b7c611333..d85bd04e0 100644
--- a/priv/repo/migrations/20200415181818_update_markers.exs
+++ b/priv/repo/migrations/20200415181818_update_markers.exs
@@ -33,7 +33,7 @@ defp update_markers do
       end)
 
     markers_attrs
-    |> Enum.chunk(1000)
+    |> Enum.chunk_every(1000)
     |> Enum.each(fn marker_attrs ->
       Repo.insert_all("markers", markers_attrs,
         on_conflict: {:replace, [:last_read_id]},