diff --git a/.promu.yml b/.promu.yml
index 27aa3aaedb..43f18f33a2 100644
--- a/.promu.yml
+++ b/.promu.yml
@@ -46,4 +46,5 @@ crossbuild:
         - netbsd/arm
         - linux/ppc64
         - linux/ppc64le
+        - linux/s390x