diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3ea2e82b..91acef50 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+## [v1.0.0-rc1] - 2020-07-28
 
 ### Added
 
@@ -252,7 +252,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Initial public version with docs
 
-[Unreleased]: https://github.com/piraeusdatastore/piraeus-operator/compare/v0.5.0...HEAD
+[v1.0.0-rc1]: https://github.com/piraeusdatastore/piraeus-operator/compare/v0.5.0...v1.0.0-rc1
 [v0.5.0]: https://github.com/piraeusdatastore/piraeus-operator/compare/v0.4.1...v0.5.0
 [v0.4.1]: https://github.com/piraeusdatastore/piraeus-operator/compare/v0.4.0...v0.4.1
 [v0.4.0]: https://github.com/piraeusdatastore/piraeus-operator/compare/v0.3.0...v0.4.0
diff --git a/charts/piraeus/Chart.yaml b/charts/piraeus/Chart.yaml
index 2747733d..c4b6f145 100644
--- a/charts/piraeus/Chart.yaml
+++ b/charts/piraeus/Chart.yaml
@@ -2,9 +2,8 @@ apiVersion: v2
 name: piraeus
 description: A Helm chart for Piraeus Operator
 type: application
-version: 0.5.0     # Chart Version
-appVersion: 0.5.0  # Application Version
-
+version: 1.0.0-rc1
+appVersion: 1.0.0-rc1
 dependencies:
   - name: "etcd"
     version: "0.7.4"
diff --git a/charts/piraeus/values.cn.yaml b/charts/piraeus/values.cn.yaml
index f1409197..e24b4fe5 100644
--- a/charts/piraeus/values.cn.yaml
+++ b/charts/piraeus/values.cn.yaml
@@ -42,7 +42,7 @@ linstorHttpsControllerSecret: "" # <- name of secret containing linstor server c
 linstorHttpsClientSecret: "" # <- name of secret containing linstor client certificates+key. See docs/security.md
 operator:
   replicas: 1 # <- number of replicas for the operator deployment
-  image: daocloud.io/piraeus/piraeus-operator:latest
+  image: daocloud.io/piraeus/piraeus-operator:v1.0.0-rc1
   resources: {}
   controller:
     controllerImage: daocloud.io/piraeus/piraeus-server:v1.7.1
diff --git a/charts/piraeus/values.yaml b/charts/piraeus/values.yaml
index fc9a79a5..61e4ea33 100644
--- a/charts/piraeus/values.yaml
+++ b/charts/piraeus/values.yaml
@@ -42,7 +42,7 @@ linstorHttpsControllerSecret: "" # <- name of secret containing linstor server c
 linstorHttpsClientSecret: "" # <- name of secret containing linstor client certificates+key. See docs/security.md
 operator:
   replicas: 1 # <- number of replicas for the operator deployment
-  image: quay.io/piraeusdatastore/piraeus-operator:latest
+  image: quay.io/piraeusdatastore/piraeus-operator:v1.0.0-rc1
   resources: {}
   controller:
     controllerImage: quay.io/piraeusdatastore/piraeus-server:v1.7.1
diff --git a/version/version.go b/version/version.go
index 1242c72e..3204da94 100644
--- a/version/version.go
+++ b/version/version.go
@@ -17,4 +17,4 @@ limitations under the License.
 
 package version
 
-var Version = "0.5.0"
+var Version = "1.0.0-rc1"