diff --git a/resource_stress/forkbomb/Dockerfile b/resource_stress/forkbomb/Dockerfile
index 532603f1..e53ecca2 100644
--- a/resource_stress/forkbomb/Dockerfile
+++ b/resource_stress/forkbomb/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:xenial-20210416
 
 COPY forkbomb forkbomb