diff --git a/build-aux/hydra/gnu-system.scm b/build-aux/hydra/gnu-system.scm
index 28fad6a8e2..ba6df9d97d 100644
--- a/build-aux/hydra/gnu-system.scm
+++ b/build-aux/hydra/gnu-system.scm
@@ -147,7 +147,8 @@ system.")
   "Return Hydra jobs."
   (define systems
     ;; Systems we want to build for.
-    '("x86_64-linux" "i686-linux"))
+    '("x86_64-linux" "i686-linux"
+      "mips64el-linux"))
 
   (define subset
     (match (assoc-ref arguments 'subset)