diff --git a/doc/CHANGELOG.md b/doc/CHANGELOG.md
index e3af12debeb7ca2a6e3a6d69b7c88e886978fa4f..8f8b536d5f9810c4a565cd07866dfe56388ad979 100644
--- a/doc/CHANGELOG.md
+++ b/doc/CHANGELOG.md
@@ -5,6 +5,14 @@ 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).
 
+## [0.2.1] - 2022-09-22 ##
+(Daniel Hornung)
+
+### Changed ###
+
+* Updated dependencies
+* Simplified implementation code a bit
+
 ## [0.2.0] - 2022-07-13
 (Timm Fitschen)
 
@@ -19,19 +27,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * Transaction::ExecuteAsynchronously is actually asynchronous now.
 * Removed boost from the headers. Boost is only a build dependency from now on.
 
-### Deprecated
-
-### Removed
-
 ### Fixed
 
 * Calling "GetFileDescriptor().wrapped->path()" after retrieval leads to SegFault.
 - #41 Updated Conan version in CI pipeline.
 
-### Security
-
-### Documentation
-
 ## [0.1.2] - 2022-05-31
 (Florian Spreckelsen)
 
diff --git a/include/caosdb/logging.h b/include/caosdb/logging.h
index 50e61ee9560f885a05b997b16366ff9618eff5fc..3fda8e83ac5c164728b2cd156292d22952b70130 100644
--- a/include/caosdb/logging.h
+++ b/include/caosdb/logging.h
@@ -2,8 +2,8 @@
 /*
  * This file is a part of the CaosDB Project.
  *
- * Copyright (C) 2021 Timm Fitschen <t.fitschen@indiscale.com>
- * Copyright (C) 2021 IndiScale GmbH <info@indiscale.com>
+ * Copyright (C) 2021-2022 Timm Fitschen <t.fitschen@indiscale.com>
+ * Copyright (C) 2021-2022 IndiScale GmbH <info@indiscale.com>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as
diff --git a/src/caosdb/connection.cpp b/src/caosdb/connection.cpp
index b5219d926cdf609fc10bae4d1225d187b28a5a95..4c77c5254c1300e908622882cd01d29d7b0aab65 100644
--- a/src/caosdb/connection.cpp
+++ b/src/caosdb/connection.cpp
@@ -2,8 +2,8 @@
  *
  * This file is a part of the CaosDB Project.
  *
- * Copyright (C) 2021 Timm Fitschen <t.fitschen@indiscale.com>
- * Copyright (C) 2021 IndiScale GmbH <info@indiscale.com>
+ * Copyright (C) 2021-2022 Timm Fitschen <t.fitschen@indiscale.com>
+ * Copyright (C) 2021-2022 IndiScale GmbH <info@indiscale.com>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as
diff --git a/src/caosdb/file_transmission/download_request_handler.cpp b/src/caosdb/file_transmission/download_request_handler.cpp
index 2415a143fb514e8ab5dfb81e2de9c9ebadc1c704..1b0764fa2039b7d4c37ba09fdc03cedf4959736a 100644
--- a/src/caosdb/file_transmission/download_request_handler.cpp
+++ b/src/caosdb/file_transmission/download_request_handler.cpp
@@ -1,7 +1,7 @@
 /*
  * This file is a part of the CaosDB Project.
- * Copyright (C) 2021 Timm Fitschen <t.fitschen@indiscale.com>
- * Copyright (C) 2021 IndiScale GmbH <info@indiscale.com>
+ * Copyright (C) 2021-2022 Timm Fitschen <t.fitschen@indiscale.com>
+ * Copyright (C) 2021-2022 IndiScale GmbH <info@indiscale.com>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as
diff --git a/src/caosdb/file_transmission/upload_request_handler.cpp b/src/caosdb/file_transmission/upload_request_handler.cpp
index d307e8e872ab7bf49a375915f755f2e1a6b100b0..57bd224dfe53a57ecb706d74dc1438e143dac641 100644
--- a/src/caosdb/file_transmission/upload_request_handler.cpp
+++ b/src/caosdb/file_transmission/upload_request_handler.cpp
@@ -1,7 +1,7 @@
 /*
  * This file is a part of the CaosDB Project.
- * Copyright (C) 2021 Timm Fitschen <t.fitschen@indiscale.com>
- * Copyright (C) 2021 IndiScale GmbH <info@indiscale.com>
+ * Copyright (C) 2021-2022 Timm Fitschen <t.fitschen@indiscale.com>
+ * Copyright (C) 2021-2022 IndiScale GmbH <info@indiscale.com>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as
diff --git a/src/caosdb/transaction.cpp b/src/caosdb/transaction.cpp
index 9da3716ab3995e6fcb08c93f95ea1b2cfa1e438c..ca8338dce4e4b721202e72c3fdecf58339746ee0 100644
--- a/src/caosdb/transaction.cpp
+++ b/src/caosdb/transaction.cpp
@@ -1,7 +1,7 @@
 /*
  * This file is a part of the CaosDB Project.
- * Copyright (C) 2021 Timm Fitschen <t.fitschen@indiscale.com>
- * Copyright (C) 2021 IndiScale GmbH <info@indiscale.com>
+ * Copyright (C) 2021-2022 Timm Fitschen <t.fitschen@indiscale.com>
+ * Copyright (C) 2021-2022 IndiScale GmbH <info@indiscale.com>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as
diff --git a/src/caosdb/unary_rpc_handler.cpp b/src/caosdb/unary_rpc_handler.cpp
index e68afc89eb193f21a05f16b992e75f9d538915d5..6d116eafae7203498ebf431a09d85c184b619191 100644
--- a/src/caosdb/unary_rpc_handler.cpp
+++ b/src/caosdb/unary_rpc_handler.cpp
@@ -1,7 +1,7 @@
 /*
  * This file is a part of the CaosDB Project.
- * Copyright (C) 2021 Timm Fitschen <t.fitschen@indiscale.com>
- * Copyright (C) 2021 IndiScale GmbH <info@indiscale.com>
+ * Copyright (C) 2021-2022 Timm Fitschen <t.fitschen@indiscale.com>
+ * Copyright (C) 2021-2022 IndiScale GmbH <info@indiscale.com>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as
diff --git a/test/test_transaction.cpp b/test/test_transaction.cpp
index dfe6bea5764116e1c09c04089ad6cf78e2e2db93..77d457c6eee2c5e9d95c53c95c1b2f0a713dcff4 100644
--- a/test/test_transaction.cpp
+++ b/test/test_transaction.cpp
@@ -1,8 +1,8 @@
 /*
  * This file is a part of the CaosDB Project.
  *
- * Copyright (C) 2021 Timm Fitschen <t.fitschen@indiscale.com>
- * Copyright (C) 2021 IndiScale GmbH <info@indiscale.com>
+ * Copyright (C) 2021-2022 Timm Fitschen <t.fitschen@indiscale.com>
+ * Copyright (C) 2021-2022 IndiScale GmbH <info@indiscale.com>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as