diff --git a/Dockerfile b/Dockerfile
index ca7ff83f..8a83ba8f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # bump: docker-golang /FROM golang:([\d.]+)/ docker:golang|^1
-FROM golang:1.21.4-bookworm AS base
+FROM golang:1.21.5-bookworm AS base
 
 # expect is used to test cli
 RUN \