diff --git a/Makefile b/Makefile
index bd44c3a69..a79f943f3 100644
--- a/Makefile
+++ b/Makefile
@@ -145,7 +145,7 @@ endif
 # Build time versioning details.
 LDFLAGS := $(shell hack/version.sh)
 
-GOLANG_VERSION := 1.21.10
+GOLANG_VERSION := 1.23.5
 
 # CI
 CAPG_WORKER_CLUSTER_KUBECONFIG ?= "/tmp/kubeconfig"
diff --git a/go.mod b/go.mod
index 826bf40ef..ac395c9d3 100644
--- a/go.mod
+++ b/go.mod
@@ -2,7 +2,7 @@ module sigs.k8s.io/cluster-api-provider-gcp
 
 go 1.22.0
 
-toolchain go1.22.8
+toolchain go1.23.5
 
 replace (
 	// cel-go should match the version imported by CAPI.
diff --git a/hack/tools/go.mod b/hack/tools/go.mod
index 9f10b1a9f..b70024ad3 100644
--- a/hack/tools/go.mod
+++ b/hack/tools/go.mod
@@ -2,7 +2,7 @@ module sigs.k8s.io/cluster-api-provider-gcp/hack/tools
 
 go 1.22.0
 
-toolchain go1.22.8
+toolchain go1.23.5
 
 replace sigs.k8s.io/cluster-api => sigs.k8s.io/cluster-api v1.8.3
 
diff --git a/netlify.toml b/netlify.toml
index c346207b2..fe1d4ee08 100644
--- a/netlify.toml
+++ b/netlify.toml
@@ -4,7 +4,7 @@
     publish = "docs/book/book"
 
 [build.environment]
-    GO_VERSION = "1.21.10"
+    GO_VERSION = "1.23.5"
 
 # Standard Netlify redirects
 [[redirects]]