diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7c8626619dd6f48633591835e485561c73113d18..205fd3917a0ba3651aee1b820dcc675d19fb383e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,20 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+### Changed
+
+### Deprecated
+
+### Removed
+
+### Fixed
+
+### Security
+
+## [0.3] - 2021-02-10
+
+### Added
+
 * New version history feature. The "H" container flag retrieves the full
   version history during a transaction (e.g. during Retrievals) and constructs
   a tree of successors and predecessors of the requested entity version.
diff --git a/DEPENDENCIES.md b/DEPENDENCIES.md
new file mode 100644
index 0000000000000000000000000000000000000000..3744c7b7d654c5f2379b396c5894f8c054907ee4
--- /dev/null
+++ b/DEPENDENCIES.md
@@ -0,0 +1,4 @@
+* caosdb-mysqlbackend == 4.0.0
+* Java 11
+* Apache Maven >= 3.6.0
+* make >= 4.2.0
diff --git a/RELEASE_GUIDELINES.md b/RELEASE_GUIDELINES.md
index 234ff24f40e9c281bfeb23703864c39369aaea05..d6c4cabb50634259b17355d7e39b8c09cda6ba85 100644
--- a/RELEASE_GUIDELINES.md
+++ b/RELEASE_GUIDELINES.md
@@ -18,6 +18,9 @@ guidelines of the CaosDB Project
 
 2. Check all general prerequisites.
 
+3. Update the version property in [pom.xml](./pom.xml) (probably this means to
+   remove the `-SNAPSHOT`.
+
 4. Merge the release branch into the master branch.
 
 5. Tag the latest commit of the master branch with `v<VERSION>`.
@@ -25,3 +28,6 @@ guidelines of the CaosDB Project
 6. Delete the release branch.
 
 7. Merge the master branch back into the dev branch.
+
+8. Update the version property in [pom.xml](./pom.xml) for the next
+   developlement round (with a `-SNAPSHOT` suffix).
diff --git a/caosdb-webui b/caosdb-webui
index 82315e1199bd5adcf584f61bfde167bd05624172..8c59cc861d646cbdba0ec749ba052656f67fd58d 160000
--- a/caosdb-webui
+++ b/caosdb-webui
@@ -1 +1 @@
-Subproject commit 82315e1199bd5adcf584f61bfde167bd05624172
+Subproject commit 8c59cc861d646cbdba0ec749ba052656f67fd58d
diff --git a/conf/core/server.conf b/conf/core/server.conf
index 039284de44da219837e522b6f9282327562eb1f0..ab5d1fb0855f5a68c174a611ebc367ceded9f0b9 100644
--- a/conf/core/server.conf
+++ b/conf/core/server.conf
@@ -68,7 +68,7 @@ MYSQL_USER_NAME=caosdb
 # Password for the user
 MYSQL_USER_PASSWORD=caosdb
 # Schema of mysql procedures and tables which is required by this CaosDB instance
-MYSQL_SCHEMA_VERSION=v4.0.0-rc2
+MYSQL_SCHEMA_VERSION=v4.0.0
 
 
 # --------------------------------------------------
diff --git a/pom.xml b/pom.xml
index 7b229e5178141e8cd90f85328f77cf4e5b3b0531..4555112f19ee43879774c80a2f8cbe3ca7035081 100644
--- a/pom.xml
+++ b/pom.xml
@@ -25,7 +25,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>org.caosdb</groupId>
   <artifactId>caosdb-server</artifactId>
-  <version>0.3-SNAPSHOT</version>
+  <version>0.3</version>
   <packaging>jar</packaging>
   <name>CaosDB Server</name>
   <properties>