diff --git a/Dockerfile b/Dockerfile
index 2563a14c..d4aacbc3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-ARG GO_VERSION=1.20.5
+ARG GO_VERSION=1.20.6
 ARG XX_VERSION=1.2.1
 
 ARG DOCKER_VERSION=24.0.2
diff --git a/docker-bake.hcl b/docker-bake.hcl
index 9bfaa7c6..8b62bf69 100644
--- a/docker-bake.hcl
+++ b/docker-bake.hcl
@@ -1,5 +1,5 @@
 variable "GO_VERSION" {
-  default = "1.20.5"
+  default = null
 }
 variable "DOCS_FORMATS" {
   default = "md"
diff --git a/hack/dockerfiles/docs.Dockerfile b/hack/dockerfiles/docs.Dockerfile
index 88d1f6c9..1cb1d9c9 100644
--- a/hack/dockerfiles/docs.Dockerfile
+++ b/hack/dockerfiles/docs.Dockerfile
@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-ARG GO_VERSION=1.20
+ARG GO_VERSION=1.20.6
 ARG FORMATS=md,yaml
 
 FROM golang:${GO_VERSION}-alpine AS docsgen
diff --git a/hack/dockerfiles/generated-files.Dockerfile b/hack/dockerfiles/generated-files.Dockerfile
index 540f18fd..1b991fcc 100644
--- a/hack/dockerfiles/generated-files.Dockerfile
+++ b/hack/dockerfiles/generated-files.Dockerfile
@@ -5,7 +5,7 @@
 # Copyright The Buildx Authors.
 # Licensed under the Apache License, Version 2.0
 
-ARG GO_VERSION="1.20"
+ARG GO_VERSION="1.20.6"
 ARG PROTOC_VERSION="3.11.4"
 
 # protoc is dynamically linked to glibc so can't use alpine base
diff --git a/hack/dockerfiles/lint.Dockerfile b/hack/dockerfiles/lint.Dockerfile
index 7cc065ea..d6d1ef7b 100644
--- a/hack/dockerfiles/lint.Dockerfile
+++ b/hack/dockerfiles/lint.Dockerfile
@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-ARG GO_VERSION=1.20
+ARG GO_VERSION=1.20.6
 
 FROM golang:${GO_VERSION}-alpine
 RUN apk add --no-cache git gcc musl-dev
diff --git a/hack/dockerfiles/vendor.Dockerfile b/hack/dockerfiles/vendor.Dockerfile
index 8a8d72ed..124d121e 100644
--- a/hack/dockerfiles/vendor.Dockerfile
+++ b/hack/dockerfiles/vendor.Dockerfile
@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-ARG GO_VERSION=1.20
+ARG GO_VERSION=1.20.6
 ARG MODOUTDATED_VERSION=v0.8.0
 
 FROM golang:${GO_VERSION}-alpine AS base