diff --git a/Dockerfile b/Dockerfile
index 267ee47..f0d3ddb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.23 as builder
+FROM golang:1.26 as builder
 
 COPY . /build/mqtt2prometheus
 WORKDIR /build/mqtt2prometheus