diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 2111488813f..3a4e7f4841c 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -5,5 +5,5 @@
   "runtimes/deno-runtime": "1.0.2",
   "lifecycle-operator": "0.8.3",
   "scheduler": "0.8.3",
-  "metrics-operator": "0.8.3"
+  "metrics-operator": "0.9.0"
 }
diff --git a/metrics-operator/CHANGELOG.md b/metrics-operator/CHANGELOG.md
index 1dee2e9f997..47963641731 100644
--- a/metrics-operator/CHANGELOG.md
+++ b/metrics-operator/CHANGELOG.md
@@ -1,5 +1,68 @@
 # Changelog
 
+## [0.9.0](https://github.com/keptn/lifecycle-toolkit/compare/metrics-operator-v0.8.3...metrics-operator-v0.9.0) (2023-12-15)
+
+
+### ⚠ BREAKING CHANGES
+
+* rename KLT to Keptn ([#2554](https://github.com/keptn/lifecycle-toolkit/issues/2554))
+* **metrics-operator:** Metrics APIs were updated to version `v1beta1` (without changing any behaviour), since they are more stable now. Resources using any of the alpha versions are no longer supported. Please update your resources manually to the new API version after you upgraded Keptn.
+* **metrics-operator:** The Analysis feature is officially released! Learn more about [here](https://lifecycle.keptn.sh/docs/implementing/slo/).
+
+### Features
+
+* **metrics-operator:** add helm value to disable APIService installation ([#2607](https://github.com/keptn/lifecycle-toolkit/issues/2607)) ([ec40ce8](https://github.com/keptn/lifecycle-toolkit/commit/ec40ce85cb116cdde11df91e358625d5c0eb0aba))
+* **metrics-operator:** introduce v1beta1 API version ([#2467](https://github.com/keptn/lifecycle-toolkit/issues/2467)) ([97acdbf](https://github.com/keptn/lifecycle-toolkit/commit/97acdbff522c99d0b050b123fd8e632c4bf0d29a))
+* **metrics-operator:** release Analysis feature ([#2457](https://github.com/keptn/lifecycle-toolkit/issues/2457)) ([fb1f4ac](https://github.com/keptn/lifecycle-toolkit/commit/fb1f4ac72ef9548454dcbfde382793ddaef7f7f1))
+* **metrics-operator:** use v1beta1 in operator logic ([94f17c1](https://github.com/keptn/lifecycle-toolkit/commit/94f17c1535213a5c93e87c85bf321612cdc1d765))
+
+
+### Bug Fixes
+
+* links for api docs ([#2557](https://github.com/keptn/lifecycle-toolkit/issues/2557)) ([84f5588](https://github.com/keptn/lifecycle-toolkit/commit/84f5588a0d8687e7266d4c772ec36650fdf4524e))
+* **metrics-operator:** disable conversion webhook for KeptnMetric ([#2493](https://github.com/keptn/lifecycle-toolkit/issues/2493)) ([fb82346](https://github.com/keptn/lifecycle-toolkit/commit/fb82346ed5a1d916c500f4ad53147e42c46a6cc5))
+* **metrics-operator:** improve troubleshooting for Analyses ([#2501](https://github.com/keptn/lifecycle-toolkit/issues/2501)) ([603ae33](https://github.com/keptn/lifecycle-toolkit/commit/603ae33680d0e8b5b7d8b01fbc43b7a03360e570))
+* security issues ([#2481](https://github.com/keptn/lifecycle-toolkit/issues/2481)) ([c538504](https://github.com/keptn/lifecycle-toolkit/commit/c53850481e1d7d161f2865801d563925426ee462))
+
+
+### Other
+
+* adapt helm charts to the new Keptn naming ([#2564](https://github.com/keptn/lifecycle-toolkit/issues/2564)) ([9ee4583](https://github.com/keptn/lifecycle-toolkit/commit/9ee45834bfa4dcedcbe99362d5d58b9febe3caae))
+* add config for spell checker action, fix typos ([#2443](https://github.com/keptn/lifecycle-toolkit/issues/2443)) ([eac178f](https://github.com/keptn/lifecycle-toolkit/commit/eac178f650962208449553086d54d26d27fa4da3))
+* clean up unused volumes ([#2638](https://github.com/keptn/lifecycle-toolkit/issues/2638)) ([32be4db](https://github.com/keptn/lifecycle-toolkit/commit/32be4db7ed35676967148fdc93cbe1a378220afa))
+* **helm-chart:** generate umbrella chart lock ([#2391](https://github.com/keptn/lifecycle-toolkit/issues/2391)) ([55e12d4](https://github.com/keptn/lifecycle-toolkit/commit/55e12d4a6c3b5cd0fbb2cd6b8b8d29f2b7c8c500))
+* **metrics-operator:** cleanup metrics operator v1alpha logic ([#2520](https://github.com/keptn/lifecycle-toolkit/issues/2520)) ([73cd0bc](https://github.com/keptn/lifecycle-toolkit/commit/73cd0bc4de703aa7281a99f6e69e3d12056fa7b2))
+* rename Keptn default namespace to 'keptn-system' ([#2565](https://github.com/keptn/lifecycle-toolkit/issues/2565)) ([aec1148](https://github.com/keptn/lifecycle-toolkit/commit/aec11489451ab1b0bcd69a6b90b0d45f69c5df7c))
+* rename KLT to Keptn ([#2554](https://github.com/keptn/lifecycle-toolkit/issues/2554)) ([15b0ac0](https://github.com/keptn/lifecycle-toolkit/commit/15b0ac0b36b8081b85b63f36e94b00065bcc8b22))
+* update to crd generator to v0.0.10 ([#2329](https://github.com/keptn/lifecycle-toolkit/issues/2329)) ([525ae03](https://github.com/keptn/lifecycle-toolkit/commit/525ae03725f374d0b056c6da2fd7af3e4062f7a2))
+
+
+### Dependency Updates
+
+* update dependency kubernetes-sigs/kustomize to v5.3.0 ([#2659](https://github.com/keptn/lifecycle-toolkit/issues/2659)) ([8877921](https://github.com/keptn/lifecycle-toolkit/commit/8877921b8be3052ce61a4f8decd96537c93df27a))
+* update github.com/keptn/lifecycle-toolkit/klt-cert-manager digest to 0677987 ([#2429](https://github.com/keptn/lifecycle-toolkit/issues/2429)) ([f718913](https://github.com/keptn/lifecycle-toolkit/commit/f7189131cefcc6fe9a42a560d696ca019afc541f))
+* update github.com/keptn/lifecycle-toolkit/klt-cert-manager digest to 964fd25 ([#2485](https://github.com/keptn/lifecycle-toolkit/issues/2485)) ([f7124d0](https://github.com/keptn/lifecycle-toolkit/commit/f7124d034dd6e1558581de35f449bf08b2c73bab))
+* update github.com/keptn/lifecycle-toolkit/klt-cert-manager digest to d2c3e14 ([#2375](https://github.com/keptn/lifecycle-toolkit/issues/2375)) ([b945bf8](https://github.com/keptn/lifecycle-toolkit/commit/b945bf875e435ab713d5b37cf8c0415948942bf1))
+* update golang.org/x/exp digest to 2478ac8 ([#2459](https://github.com/keptn/lifecycle-toolkit/issues/2459)) ([6ac5556](https://github.com/keptn/lifecycle-toolkit/commit/6ac5556d0469a7e8912920e30514e911ee257ee3))
+* update golang.org/x/exp digest to 6522937 ([#2595](https://github.com/keptn/lifecycle-toolkit/issues/2595)) ([eeef6dd](https://github.com/keptn/lifecycle-toolkit/commit/eeef6dd4fe756e016cc89f74dc05705997c558df))
+* update golang.org/x/exp digest to 9a3e603 ([#2473](https://github.com/keptn/lifecycle-toolkit/issues/2473)) ([0677987](https://github.com/keptn/lifecycle-toolkit/commit/067798730c76b4e4625d982f3777245661f45c39))
+* update golang.org/x/exp digest to f3f8817 ([#2646](https://github.com/keptn/lifecycle-toolkit/issues/2646)) ([56d795b](https://github.com/keptn/lifecycle-toolkit/commit/56d795be5b6d6ef1740a58cbd036c6e88c8abed0))
+* update module github.com/datadog/datadog-api-client-go/v2 to v2.19.0 ([#2526](https://github.com/keptn/lifecycle-toolkit/issues/2526)) ([a919941](https://github.com/keptn/lifecycle-toolkit/commit/a919941bee8d98cb9f3bbf0d00c1823e5acd417b))
+* update module github.com/gorilla/mux to v1.8.1 ([#2412](https://github.com/keptn/lifecycle-toolkit/issues/2412)) ([847b650](https://github.com/keptn/lifecycle-toolkit/commit/847b6501ea2fabc312fad25948e0c0f6dc79f22f))
+* update module github.com/keptn/lifecycle-toolkit/keptn-cert-manager to v0.8.0 ([#2534](https://github.com/keptn/lifecycle-toolkit/issues/2534)) ([94007a0](https://github.com/keptn/lifecycle-toolkit/commit/94007a03cd9bd7e09bad79feb12b27b615a75151))
+* update module go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc to v0.46.1 ([#2530](https://github.com/keptn/lifecycle-toolkit/issues/2530)) ([8b65c55](https://github.com/keptn/lifecycle-toolkit/commit/8b65c55cc096e224652691598eaa9451f5a71ace))
+* update module golang.org/x/net to v0.18.0 ([#2479](https://github.com/keptn/lifecycle-toolkit/issues/2479)) ([6ddd8ee](https://github.com/keptn/lifecycle-toolkit/commit/6ddd8eeec5eabb0c67b5a7b9965a34368f62c8d5))
+* update module golang.org/x/net to v0.19.0 ([#2619](https://github.com/keptn/lifecycle-toolkit/issues/2619)) ([af2d0a5](https://github.com/keptn/lifecycle-toolkit/commit/af2d0a509b670792e06e2d05ab4be261d3bb54f4))
+* update module google.golang.org/grpc to v1.59.0 ([#2380](https://github.com/keptn/lifecycle-toolkit/issues/2380)) ([8343772](https://github.com/keptn/lifecycle-toolkit/commit/8343772244e2403702bd562eeb5c348ecffa00e1))
+* update module k8s.io/apimachinery to v0.28.4 ([#2514](https://github.com/keptn/lifecycle-toolkit/issues/2514)) ([c25c236](https://github.com/keptn/lifecycle-toolkit/commit/c25c236ecc37dc1f33b75a172cee2422bdb416ba))
+* update module k8s.io/klog/v2 to v2.110.1 ([#2409](https://github.com/keptn/lifecycle-toolkit/issues/2409)) ([d2c3e14](https://github.com/keptn/lifecycle-toolkit/commit/d2c3e148cd1181e50f679ca859a016f762eaca84))
+* update opentelemetry-go monorepo (minor) ([#2535](https://github.com/keptn/lifecycle-toolkit/issues/2535)) ([7e3f5e6](https://github.com/keptn/lifecycle-toolkit/commit/7e3f5e6a14edeb1063765c3122f90e4c7659c943))
+
+
+### Refactoring
+
+* adapt SLI and SLO converters to convert to `v1beta1` metrics API resources ([#2523](https://github.com/keptn/lifecycle-toolkit/issues/2523)) ([0140bab](https://github.com/keptn/lifecycle-toolkit/commit/0140bab6a048b84393e403c91dd4a477430f7184))
+
 ## [0.8.3](https://github.com/keptn/lifecycle-toolkit/compare/metrics-operator-v0.8.2...metrics-operator-v0.8.3) (2023-10-30)
 
 
diff --git a/metrics-operator/Makefile b/metrics-operator/Makefile
index 8245dfa4d70..3d9faee86ff 100644
--- a/metrics-operator/Makefile
+++ b/metrics-operator/Makefile
@@ -7,7 +7,7 @@ RELEASE_REGISTRY?=ghcr.io/keptn
 RELEASE_TIME=$(shell date +%Y%m%d%s)
 BUILD_TIME=$(shell date -u "+%F_%T")
 RELEASE_VERSION?=$(RELEASE_TIME)-v0.24.3#$(shell git describe --tags --match "v*")
-TAG?="v0.8.3" # x-release-please-version
+TAG?="v0.9.0" # x-release-please-version
 RELEASE_IMAGE:=metrics-operator:$(TAG)
 CHART_APPVERSION?=""
 
diff --git a/metrics-operator/chart/Chart.yaml b/metrics-operator/chart/Chart.yaml
index 9296a779c81..fc0fc2ed575 100644
--- a/metrics-operator/chart/Chart.yaml
+++ b/metrics-operator/chart/Chart.yaml
@@ -40,7 +40,7 @@ version: 0.1.0
 # incremented each time you make changes to the application. Versions are not expected to
 # follow Semantic Versioning. They should reflect the version the application is using.
 # It is recommended to use it with quotes.
-appVersion: "v0.8.3" # x-release-please-version
+appVersion: "v0.9.0" # x-release-please-version
 dependencies:
   - name: common
     repository: "https://charts.lifecycle.keptn.sh"
diff --git a/metrics-operator/chart/values.yaml b/metrics-operator/chart/values.yaml
index 139fdc0e987..f0fbf813ff5 100644
--- a/metrics-operator/chart/values.yaml
+++ b/metrics-operator/chart/values.yaml
@@ -130,7 +130,7 @@ image:
 ## @param   image.repository specify registry for manager image
   repository: keptn/metrics-operator
 ## @param   image.tag select tag for manager image
-  tag: v0.8.3 # x-release-please-version
+  tag: v0.9.0 # x-release-please-version
 ## @param   imagePullPolicy specify pull policy for manager image
 imagePullPolicy: Always
 ## @extra  livenessProbe custom livenessprobe for manager container
diff --git a/metrics-operator/converter/sli_converter.md b/metrics-operator/converter/sli_converter.md
index 849dd90d954..e31768d0985 100644
--- a/metrics-operator/converter/sli_converter.md
+++ b/metrics-operator/converter/sli_converter.md
@@ -13,7 +13,7 @@ To run the converter, execute the following command:
 
 <!---x-release-please-start-version-->
 ```shell
-METRICS_OPERATOR_IMAGE=ghcr.io/keptn/metrics-operator:v0.8.3
+METRICS_OPERATOR_IMAGE=ghcr.io/keptn/metrics-operator:v0.9.0
 PATH_TO_SLI=<PATH_TO_SLI>
 KEPTN_PROVIDER_NAME=<KEPTN_PROVIDER_NAME>
 KEPTN_PROVIDER_NAMESPACE=<KEPTN_PROVIDER_NAMESPACE>
diff --git a/metrics-operator/converter/slo_converter.md b/metrics-operator/converter/slo_converter.md
index 07be7009703..8eb3099bd12 100644
--- a/metrics-operator/converter/slo_converter.md
+++ b/metrics-operator/converter/slo_converter.md
@@ -35,7 +35,7 @@ To run the converter, execute the following command:
 
 <!---x-release-please-start-version-->
 ```shell
-METRICS_OPERATOR_IMAGE=ghcr.io/keptn/metrics-operator:v0.8.3
+METRICS_OPERATOR_IMAGE=ghcr.io/keptn/metrics-operator:v0.9.0
 PATH_TO_SLO=<PATH_TO_SLO>
 ANALYSIS_VALUE_TEMPLATE_NAMESPACE=<ANALYSIS_VALUE_TEMPLATE_NAMESPACE>
 ANALYSIS_DEFINITION_NAME=<ANALYSIS_DEFINITION_NAME>