diff --git a/mkosi.conf.d/05-tools/mkosi.conf.d/opensuse.conf b/mkosi.conf.d/05-tools/mkosi.conf.d/opensuse.conf
index c065a52cf3..468f56856f 100644
--- a/mkosi.conf.d/05-tools/mkosi.conf.d/opensuse.conf
+++ b/mkosi.conf.d/05-tools/mkosi.conf.d/opensuse.conf
@@ -5,6 +5,7 @@ ToolsTreeDistribution=opensuse
 
 [Build]
 ToolsTreePackages=
+        libz1
         gh
         mypy
         pkgconfig(blkid)