diff --git a/Dockerfile b/Dockerfile
index 6b71d1bf..93e0be65 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,7 +6,7 @@
 # native Go arch inside the builder image.
 
 # --- Builder ---------------------------------------------------------------
-FROM --platform=$BUILDPLATFORM golang:1.26-bookworm AS builder
+FROM --platform=$BUILDPLATFORM golang:1.27-bookworm AS builder
 
 # Pure Go builds cross-compile without a native database toolchain.
 ARG TARGETARCH
diff --git a/Dockerfile.updater b/Dockerfile.updater
index 1d275ca0..ff426d53 100644
--- a/Dockerfile.updater
+++ b/Dockerfile.updater
@@ -8,7 +8,7 @@
 # toolchain runs natively and only `go build` is cross-compiled.
 
 # --- Builder ---------------------------------------------------------------
-FROM --platform=$BUILDPLATFORM golang:1.26-alpine AS builder
+FROM --platform=$BUILDPLATFORM golang:1.27-alpine AS builder
 
 RUN apk add --no-cache git