diff --git a/Makefile b/Makefile
index 3b4bb6cf26..8a22dbc71c 100644
--- a/Makefile
+++ b/Makefile
@@ -70,7 +70,7 @@ HELM_URL ?= https://get.helm.sh/helm-$(HELM_VERSION)-linux-amd64.tar.gz
 CLUSTERCTL_URL ?= https://github.com/kubernetes-sigs/cluster-api/releases/download/v$(CLUSTERCTL_VERSION)/clusterctl-$(OPERATING_SYSTEM)-amd64
 CILIUM_CLI_URL ?= https://github.com/cilium/cilium-cli/releases/download/$(CILIUM_CLI_VERSION)/cilium-$(OPERATING_SYSTEM)-amd64.tar.gz
 TESTPKGS ?= github.com/siderolabs/talos/...
-RELEASES ?= v1.3.7 v1.4.5
+RELEASES ?= v1.4.8 v1.5.2
 SHORT_INTEGRATION_TEST ?=
 CUSTOM_CNI_URL ?=
 INSTALLER_ARCH ?= all
diff --git a/internal/integration/provision/upgrade.go b/internal/integration/provision/upgrade.go
index e88076eb32..dfdcc81afe 100644
--- a/internal/integration/provision/upgrade.go
+++ b/internal/integration/provision/upgrade.go
@@ -75,15 +75,15 @@ type upgradeSpec struct {
 
 const (
 	// These versions should be kept in sync with Makefile variable RELEASES.
-	previousRelease = "v1.3.7"
-	stableRelease   = "v1.4.5" // or soon-to-be-stable
+	previousRelease = "v1.4.8"
+	stableRelease   = "v1.5.2" // or soon-to-be-stable
 	// The current version (the one being built on CI) is DefaultSettings.CurrentVersion.
 
 	// Command to find Kubernetes version for past releases:
 	//
 	//  git show ${TAG}:pkg/machinery/constants/constants.go | grep KubernetesVersion
-	previousK8sVersion = "1.26.2" // constants.DefaultKubernetesVersion in the previousRelease
-	stableK8sVersion   = "1.27.3" // constants.DefaultKubernetesVersion in the stableRelease
+	previousK8sVersion = "1.27.4" // constants.DefaultKubernetesVersion in the previousRelease
+	stableK8sVersion   = "1.28.1" // constants.DefaultKubernetesVersion in the stableRelease
 	currentK8sVersion  = constants.DefaultKubernetesVersion
 )