diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 00dfad9..6da8f7e 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -12,7 +12,7 @@ on:
       - master
 
 env:
-  kernel: "6.18.46"
+  kernel: "6.18.48"
   GCS_BUCKET: images.metal-pod.io
 
 jobs:
diff --git a/Dockerfile b/Dockerfile
index bbb73e3..e1712a3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -38,9 +38,9 @@ RUN set -ex \
     zlib-dev \
     zstd
 
-ENV KERNEL_SOURCE=https://www.kernel.org/pub/linux/kernel/${KERNEL_MAJOR}/linux-${KERNEL_VERSION}.tar.xz
-ENV KERNEL_SHA256_SUMS=https://www.kernel.org/pub/linux/kernel/${KERNEL_MAJOR}/sha256sums.asc
-ENV KERNEL_PGP2_SIGN=https://www.kernel.org/pub/linux/kernel/${KERNEL_MAJOR}/linux-${KERNEL_VERSION}.tar.sign
+ENV KERNEL_SOURCE=https://cdn.kernel.org/pub/linux/kernel/${KERNEL_MAJOR}/linux-${KERNEL_VERSION}.tar.xz
+ENV KERNEL_SHA256_SUMS=https://cdn.kernel.org/pub/linux/kernel/${KERNEL_MAJOR}/sha256sums.asc
+ENV KERNEL_PGP2_SIGN=https://cdn.kernel.org/pub/linux/kernel/${KERNEL_MAJOR}/linux-${KERNEL_VERSION}.tar.sign
 
 # tell xz decompressor to use as much threads as cpu cores
 ENV XZ_OPT="--threads=0"
diff --git a/Makefile b/Makefile
index 7d0df47..ee47270 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 .ONESHELL:
-KERNEL_VERSION := $(or ${KERNEL_VERSION},6.18.46)
+KERNEL_VERSION := $(or ${KERNEL_VERSION},6.18.48)
 
 .PHONY: all
 all: build