diff --git a/Dockerfile.derper b/Dockerfile.derper
index 96b69ce2..0deb69e4 100644
--- a/Dockerfile.derper
+++ b/Dockerfile.derper
@@ -1,6 +1,6 @@
 # For testing purposes only
 
-FROM golang:1.26.2-alpine AS build-env
+FROM golang:1.26.3-alpine AS build-env
 
 WORKDIR /go/src
 
diff --git a/Dockerfile.tailscale-HEAD b/Dockerfile.tailscale-HEAD
index 4880f54e..7d0d43bf 100644
--- a/Dockerfile.tailscale-HEAD
+++ b/Dockerfile.tailscale-HEAD
@@ -4,7 +4,7 @@
 # This Dockerfile is more or less lifted from tailscale/tailscale
 # to ensure a similar build process when testing the HEAD of tailscale.
 
-FROM golang:1.26.2-alpine AS build-env
+FROM golang:1.26.3-alpine AS build-env
 
 WORKDIR /go/src