diff --git a/server/Dockerfile b/server/Dockerfile
index f44dc6e..be1470d 100644
--- a/server/Dockerfile
+++ b/server/Dockerfile
@@ -1,7 +1,7 @@
 # syntax=docker/dockerfile:1
 
 # ─── Stage 1: Build Go binaries ───────────────────────────────────────────────
-FROM golang:1.23-alpine AS builder
+FROM golang:1.26.2-alpine AS builder
 
 ARG TARGETOS
 ARG TARGETARCH
diff --git a/server/go.mod b/server/go.mod
index d4aea79..6322196 100644
--- a/server/go.mod
+++ b/server/go.mod
@@ -1,6 +1,6 @@
 module github.com/geo-platform/tenant-api
 
-go 1.23
+go 1.26.2
 
 require (
 	github.com/alicebob/miniredis/v2 v2.37.0