diff --git a/CHANGELOG.md b/CHANGELOG.md
index 10652f17f2f515bb408d91ffc2f18564c7452f1d..dfc997619a100df678f833131332c0c3675118b8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,16 +5,46 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+## [0.1] 2021-11-08
+(Timm Fitschen)
+
+The initial release contains two separate GRPC APIs, one for transactions of
+entities (Entity API) and one for general information about the server.
+
+Note that the authentication of clients (and/or servers) is not defined as
+a protobuf API. Instead, the server should provide authentication schemes based
+on the transport protocols (usually HTTP/2) and indicate the options in its own
+documentation.
 
 ### Added
 
-### Changed
+#### Entity API (v1)
+
+The Entity API defines entities, the first-class citizens of CaosDB and the
+transactions for insertion, updates, retrieval and deletion of entities and the
+upload and download of binary files.
+
+Entities can be retrieved by id or by query. Several entities can be processed
+a single transaction and the transaction types (insertion, update, deletion,
+retrieval) can be mixed in a single transaction.
+
+Notable current limitations of the API:
+
+ * The error handling is still not perfect. Properties cannot have messages
+   right now and only a few error messages are defined in the API.
+ * The version message can only represent the version id of an entity. The
+   History cannot be retrieved.
+ * The entity's access control lists cannot be changed or retrieved.
+ * The entity state cannot be changed or retrieved.
+ * A lot of flags (e.g. inheritance among other things) which are implemented
+   in the REST-API of CaosDB are not supported.
 
-### Deprecated
+The current release is designed in a way that these limitation can be be
+overcome in future releases of the API without braking backwards compatibility.
 
-### Removed
+#### Info API (v1)
 
-### Fixed
+The Info API is strict read-only API which provides useful non-confidential
+information about the server.
 
-### Security
+The initial release of this API is quite limited. Only the 
diff --git a/proto/caosdb/CMakeLists.txt b/proto/caosdb/CMakeLists.txt
index 1ecce675fc50356899436b965fbf2270d821416c..870d96e23c6b06026f05b84c928e0392bcd1c108 100644
--- a/proto/caosdb/CMakeLists.txt
+++ b/proto/caosdb/CMakeLists.txt
@@ -19,8 +19,8 @@
 #
 
 set(CAOSDB_API_PACKAGES
-    caosdb.info.v1alpha1
-    caosdb.entity.v1alpha1
+    caosdb.info.v1
+    caosdb.entity.v1
     )
 
 # pass variable to parent scope
diff --git a/proto/caosdb/entity/v1alpha1/main.proto b/proto/caosdb/entity/v1/main.proto
similarity index 99%
rename from proto/caosdb/entity/v1alpha1/main.proto
rename to proto/caosdb/entity/v1/main.proto
index 605711e0e3378449eed4b44d6cb220b003899d5e..78bd4d4fde239bc4b2da68ea485e2bfe860f8ac4 100644
--- a/proto/caosdb/entity/v1alpha1/main.proto
+++ b/proto/caosdb/entity/v1/main.proto
@@ -18,12 +18,12 @@
 // along with this program. If not, see <https://www.gnu.org/licenses/>.
 //
 
-// This is the main file of the caosdb.entity.v1alpha1 package.
+// This is the main file of the caosdb.entity.v1 package.
 syntax                      = "proto3";
 option  java_multiple_files = true;
-option  java_package        = "org.caosdb.api.entity.v1alpha1";
+option  java_package        = "org.caosdb.api.entity.v1";
 option  cc_enable_arenas    = true;
-package caosdb.entity.v1alpha1;
+package caosdb.entity.v1;
 
 // Data type for references to other entities.
 message ReferenceDataType {
diff --git a/proto/caosdb/info/v1alpha1/main.proto b/proto/caosdb/info/v1/main.proto
similarity index 91%
rename from proto/caosdb/info/v1alpha1/main.proto
rename to proto/caosdb/info/v1/main.proto
index d1291dad3c34538748f32d5ca6efe341a3aa6a64..9af2d93a6de624492c9a88c430f6561101942670 100644
--- a/proto/caosdb/info/v1alpha1/main.proto
+++ b/proto/caosdb/info/v1/main.proto
@@ -18,12 +18,12 @@
 // along with this program. If not, see <https://www.gnu.org/licenses/>.
 //
 
-// This is the main file of the caosdb.info.v1alpha1 package.
+// This is the main file of the caosdb.info.v1 package.
 syntax                     = "proto3";
 option java_multiple_files = true;
-option java_package        = "org.caosdb.api.info.v1alpha1";
+option java_package        = "org.caosdb.api.info.v1";
 
-package caosdb.info.v1alpha1;
+package caosdb.info.v1;
 
 // The version of an agent (following SemVer 2.0.0)
 message VersionInfo {