diff --git a/_config.yml b/_config.yml
index a57fa7892a..c60938407b 100644
--- a/_config.yml
+++ b/_config.yml
@@ -90,4 +90,4 @@ defaults:
       index : true
 
 variables:
-  vespa_version: "8.397.20"
+  vespa_version: "8.398.4"