diff --git a/specifications/ewd998/manifest.json b/specifications/ewd998/manifest.json
index 9d8c35b8..5e4ee6aa 100644
--- a/specifications/ewd998/manifest.json
+++ b/specifications/ewd998/manifest.json
@@ -162,7 +162,7 @@
       "features": [],
       "models": [],
       "proof": {
-        "maxRuntimeMinutes": 4
+        "maxRuntimeMinutes": 6
       }
     },
     {