diff --git a/Dockerfile b/Dockerfile
index 9758f58..126dd4d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 FROM alpine:3.14.0 as build
 
-ENV SQUID_VER 4.15
+ENV SQUID_VER 4.16
 
 # fix conflict with libretls and libressl
 RUN set -x && \