diff --git a/Dockerfile b/Dockerfile
index 2378cf3..55ba3bc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # get golang container
-FROM golang:1.20.7
+FROM golang:1.21.1
 
 # get args
 ARG apiVersion=unknown
diff --git a/go.mod b/go.mod
index 01f0b24..a0be3ad 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/tobiasehlert/teslamateapi
 
-go 1.20
+go 1.21
 
 require (
 	github.com/eclipse/paho.mqtt.golang v1.4.3