1 files changed, 1 insertions, 0 deletions

diff --git a/src/main/java/cuchaz/enigma/mapping/MappingsRenamer.java b/src/main/java/cuchaz/enigma/mapping/MappingsRenamer.java
index 7c6c831..e35ef3e 100644
--- a/src/main/java/cuchaz/enigma/mapping/MappingsRenamer.java
+++ b/src/main/java/cuchaz/enigma/mapping/MappingsRenamer.java
@@ -13,6 +13,7 @@ package cuchaz.enigma.mapping;
 import java.io.IOException;
 import java.io.ObjectOutputStream;
 import java.io.OutputStream;
+import java.io.Serializable;
 import java.util.List;
 import java.util.Set;
 import java.util.zip.GZIPOutputStream;