diff --git a/pipelines/shared-helpers/test-binaries-image/Dockerfile b/pipelines/shared-helpers/test-binaries-image/Dockerfile
index c1f6cf1be..3197b1c70 100644
--- a/pipelines/shared-helpers/test-binaries-image/Dockerfile
+++ b/pipelines/shared-helpers/test-binaries-image/Dockerfile
@@ -3,7 +3,7 @@
 # Copyright 2020-2026 the Pinniped contributors. All Rights Reserved.
 # SPDX-License-Identifier: Apache-2.0
 
-FROM golang:1.26.5-bookworm as build-env
+FROM golang:1.27rc2-bookworm as build-env
 WORKDIR /work
 COPY . .
 ARG GOPROXY
diff --git a/pipelines/shared-helpers/test-binaries-image/Dockerfile_fips b/pipelines/shared-helpers/test-binaries-image/Dockerfile_fips
index fdd005162..0500e434e 100644
--- a/pipelines/shared-helpers/test-binaries-image/Dockerfile_fips
+++ b/pipelines/shared-helpers/test-binaries-image/Dockerfile_fips
@@ -6,7 +6,7 @@
 # we need a separate dockerfile for the fips test image so that the integration tests
 # use the right ciphers etc.
 
-FROM golang:1.26.5-bookworm as build-env
+FROM golang:1.27rc2-bookworm as build-env
 WORKDIR /work
 COPY . .
 ARG GOPROXY