diff --git a/kernel/Dockerfile b/kernel/Dockerfile
index 381c8b6f0..2b028c98c 100644
--- a/kernel/Dockerfile
+++ b/kernel/Dockerfile
@@ -42,8 +42,8 @@ ENV KERNEL_SOURCE=https://www.kernel.org/pub/linux/kernel/v4.x/linux-${KERNEL_VE
 ENV KERNEL_SHA256_SUMS=https://www.kernel.org/pub/linux/kernel/v4.x/sha256sums.asc
 ENV KERNEL_PGP2_SIGN=https://www.kernel.org/pub/linux/kernel/v4.x/linux-${KERNEL_VERSION}.tar.sign
 
-ENV WIREGUARD_VERSION=0.0.20180802
-ENV WIREGUARD_SHA256="cd1da34b377d58df760aadf69ced045081517570586fc2d4eed7f09f5d5a47c6"
+ENV WIREGUARD_VERSION=0.0.20180809
+ENV WIREGUARD_SHA256="3e351c42d22de427713f1da06d21189c5896a694a66cf19233a7c33295676f19"
 ENV WIREGUARD_URL=https://git.zx2c4.com/WireGuard/snapshot/WireGuard-${WIREGUARD_VERSION}.tar.xz
 
 # We copy the entire directory. This copies some unneeded files, but