diff --git a/Dockerfile b/Dockerfile
index 5c1313b5..cf1f6887 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: Apache-2.0
 
 #############      builder                                  #############
-FROM golang:1.19.4 AS builder
+FROM golang:1.20.4 AS builder
 
 WORKDIR /go/src/github.com/gardener/machine-controller-manager-provider-openstack
 COPY . .
diff --git a/go.mod b/go.mod
index 422593af..112d9efe 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/gardener/machine-controller-manager-provider-openstack
 
-go 1.19
+go 1.20
 
 require (
 	github.com/ahmetb/gen-crd-api-reference-docs v0.3.0