diff --git a/prepare_source b/prepare_source
index a110307..0b9a126 100755
--- a/prepare_source
+++ b/prepare_source
@@ -1,5 +1,4 @@
-version_orig=20260121.00
-version_suffix=gl0
+version_orig=20260521.00
 
 # Clone upstream repository
 workdir="$(mktemp -d)"