diff --git a/last_snapshot.txt b/last_snapshot.txt
index dbb16db..ba8592a 100644
--- a/last_snapshot.txt
+++ b/last_snapshot.txt
@@ -1 +1 @@
-1.20.5-pre3
\ No newline at end of file
+1.20.5-pre4
\ No newline at end of file
diff --git a/output/backwards/mappings-1.20to1.19.4.nbt b/output/backwards/mappings-1.20to1.19.4.nbt
index 5c87198..d7c13c7 100644
Binary files a/output/backwards/mappings-1.20to1.19.4.nbt and b/output/backwards/mappings-1.20to1.19.4.nbt differ