diff --git a/Dockerfile b/Dockerfile
index 4d9c1357..7be4a626 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -13,7 +13,7 @@
 # limitations under the License.
 
 # Build the istio-csr binary
-FROM docker.io/library/golang:1.19 as builder
+FROM docker.io/library/golang:1.20 as builder
 
 WORKDIR /workspace
 # Copy the Go Modules manifests
diff --git a/go.mod b/go.mod
index ab465109..3fdee843 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/cert-manager/istio-csr
 
-go 1.19
+go 1.20
 
 require (
 	github.com/cert-manager/cert-manager v1.12.0