diff --git a/RELEASE.md b/RELEASE.md
index e60020c37d..efe51d0675 100644
--- a/RELEASE.md
+++ b/RELEASE.md
@@ -2,7 +2,7 @@
 
 Before creating a new release please do a careful consideration about the
 version number for the new release. We are following
-[Semantic Versioning](https://semver.org/) with GSA 8.
+[Calendar Versioning](https://calver.org/) with GSA 20.8.
 
 * Fetch upstream changes and create release branch
 
@@ -15,10 +15,20 @@ version number for the new release. We are following
   and increment the version number and check PROJECT_BETA_RELEASE.
   PROJECT_BETA_RELEASE must be unset for a non pre-release.
 
+* Open [gsa/CMakeLists.txt](https://github.com/greenbone/gsa/blob/master/gsa/CMakeLists.txt)
+  and increment to the same version number.
+
+* Open [gsad/CMakeLists.txt](https://github.com/greenbone/gsa/blob/master/gsad/CMakeLists.txt)
+  and increment to the same version number.
+
 * Update version at the [package.json](https://github.com/greenbone/gsa/blob/master/gsa/package.json) file.
 
 * Check version at the about page running GSA via gsad.
 
+* Open [gsa/src/gmp/gmpsettings.js](https://github.com/greenbone/gsa/blob/master/gsa/src/gmp/gmpsettings.js)
+  and check the links for the manual (DEFAULT_MANUAL_URL and
+  DEFAULT_PROTOCOLDOC_URL variables).
+
 * Test the build
 
   ```sh
@@ -49,7 +59,14 @@ version number for the new release. We are following
   git tag -s v<version>
   ```
 
-* Update version in [CMakeLists.tx](https://github.com/greenbone/gsa/blob/master/CMakeLists.txt)
+* Update version in [CMakeLists.tx](https://github.com/greenbone/gsa/blob/master/CMakeLists.txt),
+  [gsa/CMakeLists.txt](https://github.com/greenbone/gsa/blob/master/gsa/CMakeLists.txt),
+  [gsad/CMakeLists.txt](https://github.com/greenbone/gsa/blob/master/gsad/CMakeLists.txt)
+  and [package.json](https://github.com/greenbone/gsa/blob/master/gsa/package.json)
+  files.
+
+* Update [CHANGELOG.md](https://github.com/greenbone/gsa/blob/master/CHANGELOG.md)
+  with draft for next release.
 
 * Create a commit
 
@@ -66,3 +83,25 @@ version number for the new release. We are following
 * Create a Github release
 
   See https://help.github.com/articles/creating-releases/
+
+* Create node modules tarball
+
+  ```sh
+  cd gsa
+  rm -rf node_modules
+  yarn install
+  tar cvzf gsa-node-modules-<version>.tar.gz node_modules
+  ```
+
+* Download release files from [GitHub release page](https://github.com/greenbone/gsa/releases)
+
+* Create GPG signatures for release files
+
+  ```sh
+  gpg --default-key 0ED1E580 --detach-sign --armor gsa-<version>.tar.gz
+  gpg --default-key 0ED1E580 --detach-sign --armor gsa-<version>.zip
+  gpg --default-key 0ED1E580 --detach-sign --armor gsa-note-modules-<version>.tar.gz
+  ```
+
+* Upload node modules tarball and signatures (.asc files) to the
+  [GitHub release page](https://github.com/greenbone/gsa/releases)