diff --git a/application/config/version.php b/application/config/version.php
index 015c8969c3c..4e0ebc7372e 100644
--- a/application/config/version.php
+++ b/application/config/version.php
@@ -11,10 +11,10 @@
  * See COPYRIGHT.php for copyright notices and details.
  */
 
-$config['versionnumber'] = '4.5.1';
+$config['versionnumber'] = '4.5.2';
 $config['dbversionnumber'] = 444;
 $config['buildnumber'] = '';
 $config['updatable'] = true;
 $config['templateapiversion']  = 3;
-$config['assetsversionnumber'] = '30201';
+$config['assetsversionnumber'] = '30202';
 return $config;
diff --git a/docs/release_notes.txt b/docs/release_notes.txt
index 5c1d41eae78..4d9407d592b 100644
--- a/docs/release_notes.txt
+++ b/docs/release_notes.txt
@@ -34,6 +34,30 @@ Thank you to everyone who helped with this new release!
 
 CHANGE LOG
 ------------------------------------------------------
+Changes from 4.5.1 (build 210420) to 4.5.2 (build 210426) April 26, 2021
+-Fixed issue: Question theme should not be deletable if it is used in a survey (Patrick Teichmann)
+-Fixed issue: Group table name is not escaped for PostgreSQL in quick translation view (Olle Haerstedt)
+-Fixed issue #15653: Dark Sky admin theme : Item texts hardly visible in hover (Jessica Höck)
+-Fixed issue #17264: Validuntil and validfrom fields don't allow just date (without time) aynmore (Carsten Schmitz)
+-Fixed issue #17257: Can't edit question code of activated survey (Olle Haerstedt)
+-Fixed issue #17247: Zip file name should not matter for question theme zip import (Olle Haerstedt)
+-Fixed issue #17235: Token additional attributes are blank after editing (#1845) (Gabriel Jenik)
+-Fixed issue #17112: Uploading files at quick translation feature using integrated editor fails with permission error (Olle Haerstedt)
+-Fixed issue #17100: New question will be added to the wrong group (#1847) (Gabriel Jenik)
+-Fixed issue #16669: getQuestionAttributes function don't get the plugins attribute (#1850) (Gabriel Jenik)
+-Fixed issue #16606: Blank page after granting user groups survey permissions (Jessica Höck)
+#Updated translation: Portuguese (Portugal) by c_schmitz, mauriciofurtado, holch, femariso, soniagouveia, marcelovincenzi, samarta
+#Updated translation: Polish by elissa
+#Updated translation: Polish (Informal) by elissa
+#Updated translation: Italian by lfanfoni
+#Updated translation: Italian (Informal) by lfanfoni
+#Updated translation: Finnish by Jmantysalo
+#Updated translation: Dutch by Han
+#Updated translation: Dutch (Informal) by Han
+#Updated translation: Croatian by rovinj
+#Updated translation: Amharic by c_schmitz
+
+
 Changes from 4.5.0 (build 210412) to 4.5.1 (build 210420) April 19, 2021
 -Fixed issue: Don't validate boolean attribute as integer for question theme (Olle Haerstedt)
 -Fixed issue: Add missing default sort order for question theme grid view (Olle Haerstedt)