diff --git a/Dockerfile b/Dockerfile
index 1364fbcce..cddaed404 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:1.25.7-bookworm@sha256:38342f3e7a504bf1efad858c18e771f84b66dc0b363add7a57c9a0bbb6cf7b12 AS builder-base
+FROM golang:1.26.0-bookworm@sha256:eae3cdfa040d0786510a5959d36a836978724d03b34a166ba2e0e198baac9196 AS builder-base
 FROM --platform=$BUILDPLATFORM builder-base AS builder
 
 ARG TARGETARCH
diff --git a/Dockerfile.windows b/Dockerfile.windows
index ca8d67848..66b00f15d 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/$BUILDARCH golang:1.25.7-bookworm@sha256:38342f3e7a504bf1efad858c18e771f84b66dc0b363add7a57c9a0bbb6cf7b12 AS builder-base
+FROM --platform=linux/$BUILDARCH golang:1.26.0-bookworm@sha256:eae3cdfa040d0786510a5959d36a836978724d03b34a166ba2e0e198baac9196 AS builder-base
 FROM --platform=linux/$BUILDARCH builder-base AS builder
 
 ARG TARGETARCH