diff --git a/debian/changelog b/debian/changelog
index db89cc19..fc9e0b02 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,17 @@
+snuffleupagus (0.5.1) UNRELEASED; urgency=medium
+
+  [ jvoisin ]
+  * Add support for syslog
+  * Improve OSX support
+  * Improve marginally of php8+ compatibility
+  * Improve php7.4 compatibility
+  * Improve the default ruleset
+  * Improve the documentation
+  * Improve the gitlab CI
+
+ -- jvoisin <julien.voisin+snuffleupagus@dustri.org>  Sat, 20 Jun 2020 12:30:00 +0200
+
+
 snuffleupagus (0.5.0) UNRELEASED; urgency=medium
 
   [ kkadosh ]
diff --git a/doc/source/changelog.rst b/doc/source/changelog.rst
index 55b5c7e8..a72b737f 100644
--- a/doc/source/changelog.rst
+++ b/doc/source/changelog.rst
@@ -1,6 +1,23 @@
 Changelog
 =========
 
+0.5.1 - `Order of the Elephant <https://github.com/nbs-system/snuffleupagus/releases/tag/v0.5.1>`__ 2020/06/20
+--------------------------------------------------------------------------------------------------------------
+
+New features
+^^^^^^^^^^^^
+* Add support for syslog
+
+
+Improvements
+^^^^^^^^^^^^
+* Improve OSX support
+* Improve marginally of php8+ compatibility
+* Improve php7.4 compatibility
+* Improve the default ruleset
+* Improve the documentation
+* Improve the gitlab CI
+
 
 0.5.0 - `Elephant Flats <https://github.com/nbs-system/snuffleupagus/releases/tag/v0.5.0>`__ 2019/06/12
 --------------------------------------------------------------------------------------------------------------
diff --git a/src/php_snuffleupagus.h b/src/php_snuffleupagus.h
index 5a02e932..b42c300f 100644
--- a/src/php_snuffleupagus.h
+++ b/src/php_snuffleupagus.h
@@ -1,7 +1,7 @@
 #ifndef PHP_SNUFFLEUPAGUS_H
 #define PHP_SNUFFLEUPAGUS_H
 
-#define PHP_SNUFFLEUPAGUS_VERSION "0.5.0"
+#define PHP_SNUFFLEUPAGUS_VERSION "0.5.1"
 #define PHP_SNUFFLEUPAGUS_EXTNAME "snuffleupagus"
 #define PHP_SNUFFLEUPAGUS_AUTHOR "NBS System"
 #define PHP_SNUFFLEUPAGUS_URL "https://github.com/jvoisin/snuffleupagus"