diff --git a/Dockerfile b/Dockerfile
index 3aab3bd..ff1e147 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 ############################
 # 1)  Go‑Build
 ############################
-FROM golang:1.23.1 AS build
+FROM golang:1.25 AS build
 
 WORKDIR /app
 COPY go.mod go.sum ./
diff --git a/go.mod b/go.mod
index 7eb502e..68b0854 100644
--- a/go.mod
+++ b/go.mod
@@ -1,5 +1,5 @@
 module git.send.nrw/sendnrw/b1tsblog
 
-go 1.23.1
+go 1.25.3
 
 require github.com/gomarkdown/markdown v0.0.0-20250311123330-531bef5e742b