diff --git a/core/src/main/resources/crawler-default.yaml b/core/src/main/resources/crawler-default.yaml
index 204b77007..ed5046056 100644
--- a/core/src/main/resources/crawler-default.yaml
+++ b/core/src/main/resources/crawler-default.yaml
@@ -467,7 +467,7 @@ config:
 
   # Guava cache use by AbstractStatusUpdaterBolt for DISCOVERED URLs
   status.updater.use.cache: true
-  status.updater.cache.spec: "expireAfterAccess=1h,softValues"
+  status.updater.cache.spec: "maximumSize=1000000,expireAfterAccess=1h"
 
   # Normalise the host component of DISCOVERED URLs before they are stored,
   # so that aliases of one server (percent-escaping, case, trailing dot)