diff --git a/Dockerfile b/Dockerfile
index b8d7700..ecc1d25 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -11,7 +11,7 @@ FROM ghcr.io/siderolabs/ca-certificates:v1.7.0 AS image-ca-certificates
 FROM ghcr.io/siderolabs/fhs:v1.7.0 AS image-fhs
 
 # runs markdownlint
-FROM docker.io/oven/bun:1.1.17-alpine AS lint-markdown
+FROM docker.io/oven/bun:1.1.18-alpine AS lint-markdown
 WORKDIR /src
 RUN bun i markdownlint-cli@0.41.0 sentences-per-line@0.2.1
 COPY .markdownlint.json .
diff --git a/internal/config/constants.go b/internal/config/constants.go
index 0e46d09..2b2cbb0 100644
--- a/internal/config/constants.go
+++ b/internal/config/constants.go
@@ -72,7 +72,7 @@ const (
 	MardownLintCLIVersion = "0.41.0"
 	// BunContainerImageVersion is the default bun container image.
 	// renovate: datasource=docker versioning=docker depName=oven/bun
-	BunContainerImageVersion = "1.1.17-alpine"
+	BunContainerImageVersion = "1.1.18-alpine"
 	// PkgsVersion is the version of pkgs.
 	// renovate: datasource=github-tags depName=siderolabs/pkgs
 	PkgsVersion = "v1.7.0"