diff --git a/lrucache/cache_test.go b/lrucache/cache_test.go
index 84b377e..d890855 100644
--- a/lrucache/cache_test.go
+++ b/lrucache/cache_test.go
@@ -2,6 +2,7 @@ package lrucache
 
 import (
 	"math/rand"
+	"runtime/debug"
 	"sort"
 	"testing"