diff --git a/scripts/prune-go-cache.sh b/scripts/prune-go-cache.sh
index 797855072..ddef54b49 100755
--- a/scripts/prune-go-cache.sh
+++ b/scripts/prune-go-cache.sh
@@ -10,7 +10,7 @@ GOCACHE=$(go env GOCACHE)
 SIZE=`du -sxm ${GOCACHE} | awk '{print $1}'`
 echo "GOCACHE size: ${SIZE}MB"
 
-if [ "${DRY_RUN}" == "" ] && [ "${TRAVIS_BRANCH}" == "master" ] && [ $SIZE -gt 3500 ]; then
+if [ "${DRY_RUN}" == "" ] && [ "${TRAVIS_BRANCH}" == "master" ] && [ $SIZE -gt 4000 ]; then
   echo "Pruning GOCACHE at ${GOCACHE}"
   find "${GOCACHE}" -type f -delete
 fi