diff --git a/Dockerfile b/Dockerfile
index d06762a..b1672bb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.24-alpine AS build
+FROM golang:1.25-alpine AS build
 WORKDIR /app
 
 # Optional: git + certs for private modules; cache modules and build cache
diff --git a/go.mod b/go.mod
index 6b87387..d04364c 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module git.send.nrw/sendnrw/go-pgp-generator
 
-go 1.24.4
+go 1.25.3
 
 require github.com/ProtonMail/go-crypto v1.3.0 // indirect