diff --git a/.github/actions/spelling/expect.txt b/.github/actions/spelling/expect.txt
index be8a9775ab..2b284b2925 100644
--- a/.github/actions/spelling/expect.txt
+++ b/.github/actions/spelling/expect.txt
@@ -650,7 +650,6 @@ Utkarsh
 validatingwebhookconfigurations
 vanalysis
 vanalysisdefinition
-vcluster
 Vec
 versioned
 versioning
diff --git a/.github/workflows/CI.yaml b/.github/workflows/CI.yaml
index 73c7313b96..46351121d2 100644
--- a/.github/workflows/CI.yaml
+++ b/.github/workflows/CI.yaml
@@ -23,7 +23,7 @@ env:
   GO_VERSION: "~1.23"
   # renovate: datasource=github-releases depName=kubernetes-sigs/controller-tools
   CONTROLLER_TOOLS_VERSION: "v0.16.5"
-  ENVTEST_K8S_VERSION: "1.24.2"
+  ENVTEST_K8S_VERSION: "1.27.0"
 defaults:
   run:
     shell: bash
diff --git a/README.md b/README.md
index 2487dc8ecc..4a811854b1 100644
--- a/README.md
+++ b/README.md
@@ -93,13 +93,7 @@ You can find our roadmap [here](https://github.com/orgs/keptn/projects/10).
 ## Installation
 
 Keptn can be installed on any Kubernetes cluster
-running Kubernetes >=1.24.
-
-For users running [vCluster](https://www.vcluster.com/),
-please note that you may need to modify
-your configuration before installing Keptn; see
-[Running Keptn with vCluster](https://keptn.sh/stable/docs/installation/configuration/vcluster/)
-for more information.
+running Kubernetes >=1.27.
 
 Use the following command sequence
 to install the latest release of Keptn:
diff --git a/chart/Chart.yaml b/chart/Chart.yaml
index 09f7ec1f0b..d1de48c208 100644
--- a/chart/Chart.yaml
+++ b/chart/Chart.yaml
@@ -32,7 +32,7 @@ annotations:
   artifacthub.io/license: Apache-2.0
   artifacthub.io/operator: 'true'
   artifacthub.io/operatorCapabilities: Full Lifecycle
-kubeVersion: '>= 1.24.0-0'
+kubeVersion: '>= 1.27.0-0'
 type: application
 version: 0.8.0
 appVersion: v2.3.0 # x-release-please-version
diff --git a/docs/docs/getting-started/observability.md b/docs/docs/getting-started/observability.md
index d0f2af2b2e..293149923c 100644
--- a/docs/docs/getting-started/observability.md
+++ b/docs/docs/getting-started/observability.md
@@ -15,7 +15,7 @@ The following is an imperative walkthrough.
 - [Docker](https://docs.docker.com/get-started/overview/)
 - [kubectl](https://kubernetes.io/docs/reference/kubectl/)
 - [Helm](https://helm.sh/docs/intro/install/)
-- A Kubernetes cluster >= 1.24 (we recommend [Kubernetes kind](https://kind.sigs.k8s.io/docs/user/quick-start/))
+- A Kubernetes cluster >= 1.27 (we recommend [Kubernetes kind](https://kind.sigs.k8s.io/docs/user/quick-start/))
   (`kind create cluster`)
 
 ## Objectives
diff --git a/docs/docs/guides/assets/multi-stage-delivery/chart.yaml b/docs/docs/guides/assets/multi-stage-delivery/chart.yaml
index 19122523f5..d8ad408b07 100644
--- a/docs/docs/guides/assets/multi-stage-delivery/chart.yaml
+++ b/docs/docs/guides/assets/multi-stage-delivery/chart.yaml
@@ -1,6 +1,6 @@
 apiVersion: v2
 name: podtato-head
-kubeVersion: ">= 1.24.0-0"
+kubeVersion: ">= 1.27.0-0"
 type: application
 version: 0.1.0
 appVersion: "v0.1.0"
diff --git a/docs/docs/installation/index.md b/docs/docs/installation/index.md
index 25d0bbe55e..8bccbfb0fe 100644
--- a/docs/docs/installation/index.md
+++ b/docs/docs/installation/index.md
@@ -24,8 +24,8 @@ After you install Keptn, you are ready to
 Keptn requires Kubernetes v1.27.0 or later.
 
 Run the following to ensure that both client and server versions
-are running Kubernetes versions greater than or equal to v1.24.
-In this example, both client and server are at v1.24.0
+are running Kubernetes versions greater than or equal to v1.27.
+In this example, both client and server are at v1.27.0
 so Keptn will work.
 
 ```shell
diff --git a/keptn-cert-manager/Makefile b/keptn-cert-manager/Makefile
index 6bf56a7bf1..2b440e52e3 100644
--- a/keptn-cert-manager/Makefile
+++ b/keptn-cert-manager/Makefile
@@ -17,7 +17,7 @@ BUILDENVVAR=CGO_ENABLED=0
 VERSION=$(shell echo $(RELEASE_VERSION) | awk -F - '{print $$2}')
 
 # ENVTEST_K8S_VERSION refers to the version of kubebuilder assets to be downloaded by envtest binary.
-ENVTEST_K8S_VERSION = 1.25.0
+ENVTEST_K8S_VERSION = 1.27.0
 
 # Get the currently used golang install path (in GOPATH/bin, unless GOBIN is set)
 ifeq (,$(shell go env GOBIN))
diff --git a/keptn-cert-manager/chart/Chart.yaml b/keptn-cert-manager/chart/Chart.yaml
index 45c5af23bf..727f4b7670 100644
--- a/keptn-cert-manager/chart/Chart.yaml
+++ b/keptn-cert-manager/chart/Chart.yaml
@@ -17,7 +17,7 @@ annotations:
       url: https://slack.keptn.sh/
   artifacthub.io/license: Apache-2.0
   artifacthub.io/operator: 'true'
-kubeVersion: '>= 1.24.0-0'
+kubeVersion: '>= 1.27.0-0'
 type: application
 version: 0.2.6
 appVersion: v2.2.2 # x-release-please-version
diff --git a/lifecycle-operator/chart/Chart.yaml b/lifecycle-operator/chart/Chart.yaml
index b1d5360b6d..0a93752f2e 100644
--- a/lifecycle-operator/chart/Chart.yaml
+++ b/lifecycle-operator/chart/Chart.yaml
@@ -26,7 +26,7 @@ annotations:
   artifacthub.io/license: Apache-2.0
   artifacthub.io/operator: 'true'
   artifacthub.io/operatorCapabilities: Full Lifecycle
-kubeVersion: '>= 1.24.0-0'
+kubeVersion: '>= 1.27.0-0'
 type: application
 version: 0.5.0
 appVersion: v1.2.0 # x-release-please-version
diff --git a/metrics-operator/chart/Chart.yaml b/metrics-operator/chart/Chart.yaml
index 508e20dee3..e82533eb72 100644
--- a/metrics-operator/chart/Chart.yaml
+++ b/metrics-operator/chart/Chart.yaml
@@ -20,7 +20,7 @@ annotations:
       url: https://slack.keptn.sh/
   artifacthub.io/license: Apache-2.0
   artifacthub.io/operator: 'true'
-kubeVersion: '>= 1.24.0-0'
+kubeVersion: '>= 1.27.0-0'
 type: application
 version: 0.3.1
 appVersion: v1.1.1 # x-release-please-version