diff --git a/Dockerfile b/Dockerfile
index efdba4284c5570ace7c8a96dbc6cfe9ebcd9cdd0..10bdb59e7861bdf5fb9d49b61190517fbd41dc0c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 FROM lsiobase/bionic-root-x86
 
 # set version for s6 overlay
-ARG OVERLAY_VERSION="v1.21.7.0"
+ARG OVERLAY_VERSION="v1.21.8.0"
 ARG OVERLAY_ARCH="amd64"
 
 # set environment variables