diff --git a/lib/mongo/migration.ex b/lib/mongo/migration.ex
index a094428a..6c93cdc6 100644
--- a/lib/mongo/migration.ex
+++ b/lib/mongo/migration.ex
@@ -170,7 +170,7 @@ defmodule Mongo.Migration do
 
       version =
         ~r/[0-9]/
-        |> Regex.scan(file)
+        |> Regex.scan(Path.basename(file))
         |> Enum.join()
         |> String.to_integer()