diff --git a/anda/tools/buildsys/muon/muon.spec b/anda/tools/buildsys/muon/muon.spec
index 151d7eba2b..5d2bd15270 100644
--- a/anda/tools/buildsys/muon/muon.spec
+++ b/anda/tools/buildsys/muon/muon.spec
@@ -1,5 +1,5 @@
 Name:           muon
-Version:        0.3.1
+Version:        0.4.0
 Release:        1%?dist
 Summary:        A meson-compatible build system