diff --git a/.tool-versions b/.tool-versions
index b5f937c74c..90506dfc21 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -6,7 +6,7 @@ concourse 7.10.0
 direnv 2.32.3
 gcloud 447.0.0
 ginkgo 2.12.1
-golang 1.20.6
+golang 1.21.2
 golangci-lint 1.54.2
 java temurin-17.0.8+101
 make 4.4
diff --git a/ci/dockerfiles/autoscaler-tools/Dockerfile b/ci/dockerfiles/autoscaler-tools/Dockerfile
index 40902dc88c..b999f73be5 100644
--- a/ci/dockerfiles/autoscaler-tools/Dockerfile
+++ b/ci/dockerfiles/autoscaler-tools/Dockerfile
@@ -45,7 +45,7 @@ RUN echo "deb http://apt.postgresql.org/pub/repos/apt/ $(lsb_release -cs)-pgdg m
 
 # install golang
 # renovate: datasource=golang-version depName=golang
-ARG GO_VERSION=1.20.6
+ARG GO_VERSION=1.21.2
 ENV GOPATH $HOME/go
 ENV PATH $HOME/go/bin:/usr/local/go/bin:$PATH
 RUN wget -q https://dl.google.com/go/go${GO_VERSION}.linux-amd64.tar.gz -P /tmp &&\