diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9dfe8d7..37a2cc3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+
+## [0.5.0] - 2020-07-18
 ### Added
 - added Pedro Albuquerque's Portuguese translation
 - added Åke Engelbrektson's Swedish translation
@@ -278,7 +280,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 - initial public release
 
-[Unreleased]: https://github.com/MightyCreak/diffuse/compare/v0.4.8...HEAD
+[Unreleased]: https://github.com/MightyCreak/diffuse/compare/v0.5.0...HEAD
+[0.5.0]: https://github.com/MightyCreak/diffuse/compare/v0.4.8...v0.5.0
 [0.4.8]: https://github.com/MightyCreak/diffuse/compare/v0.4.7...v0.4.8
 [0.4.7]: https://github.com/MightyCreak/diffuse/compare/v0.4.6...v0.4.7
 [0.4.6]: https://github.com/MightyCreak/diffuse/compare/v0.4.5...v0.4.6
diff --git a/src/usr/share/gnome/help/diffuse/C/diffuse.xml b/src/usr/share/gnome/help/diffuse/C/diffuse.xml
index 8c7cb2d..ff37a64 100644
--- a/src/usr/share/gnome/help/diffuse/C/diffuse.xml
+++ b/src/usr/share/gnome/help/diffuse/C/diffuse.xml
@@ -2,9 +2,9 @@
 <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
 "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" [
   <!ENTITY app "Diffuse">
-  <!ENTITY app-version "0.4.8">
-  <!ENTITY app-year "2006-2014">
-  <!ENTITY manual-year "2009-2014">
+  <!ENTITY app-version "0.5.0">
+  <!ENTITY app-year "2006-2020">
+  <!ENTITY manual-year "2009-2020">
 ]>
 <book id="index" lang="en">
   <title><application>&app;</application> User's Manual</title>
diff --git a/src/usr/share/gnome/help/diffuse/cs/diffuse.xml b/src/usr/share/gnome/help/diffuse/cs/diffuse.xml
index 8d9e844..e2084b0 100644
--- a/src/usr/share/gnome/help/diffuse/cs/diffuse.xml
+++ b/src/usr/share/gnome/help/diffuse/cs/diffuse.xml
@@ -2,9 +2,9 @@
 <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"
 [
   <!ENTITY app "Diffuse">
-  <!ENTITY app-version "0.4.8">
-  <!ENTITY app-year "2006-2014">
-  <!ENTITY manual-year "2009-2014">
+  <!ENTITY app-version "0.5.0">
+  <!ENTITY app-year "2006-2020">
+  <!ENTITY manual-year "2009-2020">
 ]>
 <book id="index" lang="cs">
   <title>Uživatelská příručka programu <application>&app;</application></title>
diff --git a/src/usr/share/gnome/help/diffuse/it/diffuse.xml b/src/usr/share/gnome/help/diffuse/it/diffuse.xml
index 3dabbc4..2a5552f 100644
--- a/src/usr/share/gnome/help/diffuse/it/diffuse.xml
+++ b/src/usr/share/gnome/help/diffuse/it/diffuse.xml
@@ -2,9 +2,9 @@
 <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
 "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" [
   <!ENTITY app "Diffuse">
-  <!ENTITY app-version "0.4.8">
-  <!ENTITY app-year "2006-2014">
-  <!ENTITY manual-year "2009-2014">
+  <!ENTITY app-version "0.5.0">
+  <!ENTITY app-year "2006-2020">
+  <!ENTITY manual-year "2009-2020">
 ]>
 <book id="index" lang="it">
   <title>Manuale utente di <application>&app;</application></title>
diff --git a/src/usr/share/gnome/help/diffuse/ru/diffuse.xml b/src/usr/share/gnome/help/diffuse/ru/diffuse.xml
index 1e35128..7cf80e6 100644
--- a/src/usr/share/gnome/help/diffuse/ru/diffuse.xml
+++ b/src/usr/share/gnome/help/diffuse/ru/diffuse.xml
@@ -2,9 +2,9 @@
 <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
 "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" [
   <!ENTITY app "Diffuse">
-  <!ENTITY app-version "0.4.8">
-  <!ENTITY app-year "2006-2014">
-  <!ENTITY manual-year "2009-2014">
+  <!ENTITY app-version "0.5.0">
+  <!ENTITY app-year "2006-2020">
+  <!ENTITY manual-year "2009-2020">
 ]>
 <book id="index" lang="ru">
   <title>Руководство Пользователя <application>&app;</application></title>
diff --git a/src/usr/share/omf/diffuse/diffuse-C.omf b/src/usr/share/omf/diffuse/diffuse-C.omf
index 42f83aa..f864acf 100644
--- a/src/usr/share/omf/diffuse/diffuse-C.omf
+++ b/src/usr/share/omf/diffuse/diffuse-C.omf
@@ -4,8 +4,8 @@
     <creator>Derrick Moser</creator>
     <maintainer>Derrick Moser</maintainer>
     <title>Diffuse User's Manual</title>
-    <date>2014-07-18</date>
-    <version identifier="0.4.8" date="2014-07-18"/>
+    <date>2020-07-18</date>
+    <version identifier="0.5.0" date="2020-07-18"/>
     <subject category="GNOME|Development|Applications"/>
     <description>Diffuse is a graphical tool for merging and comparing text files.</description>
     <type>manual</type>
diff --git a/src/usr/share/omf/diffuse/diffuse-cs.omf b/src/usr/share/omf/diffuse/diffuse-cs.omf
index 9e2da63..a098508 100644
--- a/src/usr/share/omf/diffuse/diffuse-cs.omf
+++ b/src/usr/share/omf/diffuse/diffuse-cs.omf
@@ -4,8 +4,8 @@
     <creator>Derrick Moser</creator>
     <maintainer>Derrick Moser</maintainer>
     <title>Uživatelská příručka programu Diffuse</title>
-    <date>2014-07-18</date>
-    <version identifier="0.4.8" date="2014-07-18"/>
+    <date>2020-07-18</date>
+    <version identifier="0.5.0" date="2020-07-18"/>
     <subject category="GNOME|Development|Applications"/>
     <description>Diffuse je grafický nástroj pro slučování a porovnávání textových souborů.</description>
     <type>manual</type>
diff --git a/src/usr/share/omf/diffuse/diffuse-it.omf b/src/usr/share/omf/diffuse/diffuse-it.omf
index 39b069f..ace8be5 100644
--- a/src/usr/share/omf/diffuse/diffuse-it.omf
+++ b/src/usr/share/omf/diffuse/diffuse-it.omf
@@ -4,8 +4,8 @@
     <creator>Derrick Moser</creator>
     <maintainer>Derrick Moser</maintainer>
     <title>Manuale utente di Diffuse</title>
-    <date>2014-07-18</date>
-    <version identifier="0.4.8" date="2014-07-18"/>
+    <date>2020-07-18</date>
+    <version identifier="0.5.0" date="2020-07-18"/>
     <subject category="GNOME|Development|Applications"/>
     <description>Diffuse è uno strumento grafico per l'unione e il confronto di file di testo.</description>
     <type>manual</type>
diff --git a/src/usr/share/omf/diffuse/diffuse-ru.omf b/src/usr/share/omf/diffuse/diffuse-ru.omf
index 51bf92b..ff54460 100644
--- a/src/usr/share/omf/diffuse/diffuse-ru.omf
+++ b/src/usr/share/omf/diffuse/diffuse-ru.omf
@@ -4,8 +4,8 @@
     <creator>Derrick Moser</creator>
     <maintainer>Derrick Moser</maintainer>
     <title>Руководство Пользователя Diffuse</title>
-    <date>2014-07-18</date>
-    <version identifier="0.4.8" date="2014-07-18"/>
+    <date>2020-07-18</date>
+    <version identifier="0.5.0" date="2020-07-18"/>
     <subject category="GNOME|Development|Applications"/>
     <description>Программа Diffuse является графическим инструментом для слияния и сравнения текстовых файлов.</description>
     <type>manual</type>
diff --git a/utils/book2manual.xsl b/utils/book2manual.xsl
index 71beb57..a85a888 100644
--- a/utils/book2manual.xsl
+++ b/utils/book2manual.xsl
@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!DOCTYPE xsl:stylesheet [
  <!ENTITY app "Diffuse">
- <!ENTITY app-version "0.4.8">
+ <!ENTITY app-version "0.5.0">
  <!ENTITY app-cmd "diffuse">
- <!ENTITY date "2014-07-18">
+ <!ENTITY date "2020-07-18">
 ]>
 <!--
   template for translating Diffuse's help documentation to a manual page
diff --git a/windows-installer/build.py b/windows-installer/build.py
index 26cb226..fead025 100755
--- a/windows-installer/build.py
+++ b/windows-installer/build.py
@@ -25,7 +25,7 @@ import platform
 import subprocess
 import sys
 
-VERSION='0.4.8'
+VERSION='0.5.0'
 PACKAGE='1'
 PLATFORM='win' + ''.join([ c for c in platform.architecture()[0] if c.isdigit() ])
 INSTALLER='diffuse-%s-%s.%s' % (VERSION, PACKAGE, PLATFORM)
diff --git a/windows-installer/diffuse.iss b/windows-installer/diffuse.iss
index 6f6439d..cdb6764 100644
--- a/windows-installer/diffuse.iss
+++ b/windows-installer/diffuse.iss
@@ -5,7 +5,7 @@
 [Setup]
 AppId=Diffuse
 AppName={cm:ToolName}
-AppVerName=Diffuse 0.4.8
+AppVerName=Diffuse 0.5.0
 DefaultDirName={pf}\Diffuse
 DefaultGroupName=Diffuse
 UninstallDisplayIcon={app}\diffusew.exe
diff --git a/windows-installer/diffuse.new.iss b/windows-installer/diffuse.new.iss
index a3deee3..d340936 100644
--- a/windows-installer/diffuse.new.iss
+++ b/windows-installer/diffuse.new.iss
@@ -4,7 +4,7 @@
 
 #define MyAppName "Diffuse Merge Tool"
 #define MyAppGroupName "Diffuse"
-#define MyAppVersion "0.5.0-alpha.7"
+#define MyAppVersion "0.5.0"
 #define MyAppPublisher "Diffuse Team"
 #define MyAppURL "https://github.com/MightyCreak/diffuse/"
 #define MyAppExeName "diffuse.exe"