diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d410a95931..0acfb6d2a0 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -64,7 +64,7 @@ jobs:
         name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version: 1.21.8
+          go-version: 1.21.9
       -
         name: Test
         run: |
diff --git a/Dockerfile b/Dockerfile
index f115289aee..d4d5533a39 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,7 @@ ARG BASE_VARIANT=alpine
 ARG ALPINE_VERSION=3.18
 ARG BASE_DEBIAN_DISTRO=bookworm
 
-ARG GO_VERSION=1.21.8
+ARG GO_VERSION=1.21.9
 ARG XX_VERSION=1.4.0
 ARG GOVERSIONINFO_VERSION=v1.3.0
 ARG GOTESTSUM_VERSION=v1.10.0
diff --git a/docker-bake.hcl b/docker-bake.hcl
index b8f908473a..bb65406d78 100644
--- a/docker-bake.hcl
+++ b/docker-bake.hcl
@@ -1,5 +1,5 @@
 variable "GO_VERSION" {
-    default = "1.21.8"
+    default = "1.21.9"
 }
 variable "VERSION" {
     default = ""
diff --git a/dockerfiles/Dockerfile.dev b/dockerfiles/Dockerfile.dev
index 3c437eeccc..593723bc7f 100644
--- a/dockerfiles/Dockerfile.dev
+++ b/dockerfiles/Dockerfile.dev
@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-ARG GO_VERSION=1.21.8
+ARG GO_VERSION=1.21.9
 ARG ALPINE_VERSION=3.18
 
 ARG BUILDX_VERSION=0.12.1
diff --git a/dockerfiles/Dockerfile.lint b/dockerfiles/Dockerfile.lint
index 86d82815e9..60200bc858 100644
--- a/dockerfiles/Dockerfile.lint
+++ b/dockerfiles/Dockerfile.lint
@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-ARG GO_VERSION=1.21.8
+ARG GO_VERSION=1.21.9
 ARG ALPINE_VERSION=3.18
 ARG GOLANGCI_LINT_VERSION=v1.55.2
 
diff --git a/dockerfiles/Dockerfile.vendor b/dockerfiles/Dockerfile.vendor
index bf912761de..0030f15123 100644
--- a/dockerfiles/Dockerfile.vendor
+++ b/dockerfiles/Dockerfile.vendor
@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-ARG GO_VERSION=1.21.8
+ARG GO_VERSION=1.21.9
 ARG ALPINE_VERSION=3.18
 ARG MODOUTDATED_VERSION=v0.8.0
 
diff --git a/e2e/testdata/Dockerfile.gencerts b/e2e/testdata/Dockerfile.gencerts
index a5460d1b23..67a53d4b12 100644
--- a/e2e/testdata/Dockerfile.gencerts
+++ b/e2e/testdata/Dockerfile.gencerts
@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-ARG GO_VERSION=1.21.8
+ARG GO_VERSION=1.21.9
 
 FROM golang:${GO_VERSION}-alpine AS generated
 ENV GOTOOLCHAIN=local