diff --git a/Dockerfile b/Dockerfile
index d55a053d4..e95d0567f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,7 +5,7 @@
 # Must override builder-base, not builder, since the latter is referred to later in the file and so must not be
 # directly replaced. See here, and note that "stage" parameter mentioned there has been renamed to
 # "build-context": https://github.com/docker/buildx/pull/904#issuecomment-1005871838
-FROM golang:1.25.5-bookworm@sha256:09f53deea14d4019922334afe6258b7b776afc1d57952be2012f2c8c4076db05 AS builder-base
+FROM golang:1.25.6-bookworm@sha256:2f768d462dbffbb0f0b3a5171009f162945b086f326e0b2a8fd5d29c3219ff14 AS builder-base
 FROM --platform=$BUILDPLATFORM builder-base AS builder
 
 ARG TARGETARCH
diff --git a/Dockerfile.windows b/Dockerfile.windows
index 86c9cffd0..da41bfef1 100644
--- a/Dockerfile.windows
+++ b/Dockerfile.windows
@@ -5,7 +5,7 @@
 # Must override builder-base, not builder, since the latter is referred to later in the file and so must not be
 # directly replaced. See here, and note that "stage" parameter mentioned there has been renamed to
 # "build-context": https://github.com/docker/buildx/pull/904#issuecomment-1005871838
-FROM --platform=linux/$BUILDARCH golang:1.25.5-bookworm@sha256:09f53deea14d4019922334afe6258b7b776afc1d57952be2012f2c8c4076db05 AS builder-base
+FROM --platform=linux/$BUILDARCH golang:1.25.6-bookworm@sha256:2f768d462dbffbb0f0b3a5171009f162945b086f326e0b2a8fd5d29c3219ff14 AS builder-base
 FROM --platform=linux/$BUILDARCH builder-base AS builder
 
 ARG TARGETARCH