diff --git a/CMakeLists.txt b/CMakeLists.txt
index 59cdded..e359691 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 3.1.0)
 
-set(MEMENTO_VERSION "0.5.5-1-beta")
-set(MEMENTO_SHORT_VERSION "0.5.5.1")
+set(MEMENTO_VERSION "0.5.6-beta")
+set(MEMENTO_SHORT_VERSION "0.5.6")
 execute_process(
     COMMAND git log --pretty=format:'%h' -n 1
     WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
diff --git a/Makefile b/Makefile
index 34fe187..4f0a115 100644
--- a/Makefile
+++ b/Makefile
@@ -39,7 +39,7 @@ appimage: setup
 	chmod +x linuxdeploy-x86_64.AppImage \
 			 linuxdeploy-plugin-qt-x86_64.AppImage \
 			 linuxdeploy-plugin-appimage-x86_64.AppImage; \
-	export VERSION=0.5.5-1; \
+	export VERSION=0.5.6; \
 	./linuxdeploy-x86_64.AppImage --appdir AppDir --plugin qt --output appimage
 
 appbundle: setup
diff --git a/windows/installer.nsi b/windows/installer.nsi
index cb44bd6..dd15113 100644
--- a/windows/installer.nsi
+++ b/windows/installer.nsi
@@ -6,8 +6,8 @@
 # These three must be integers
 !define VERSIONMAJOR 0
 !define VERSIONMINOR 5
-!define VERSIONBUILD 5
-!define VERSIONREVISION 1
+!define VERSIONBUILD 6
+!define VERSIONREVISION 0
 # These will be displayed by the "Click here for support information" link in "Add/Remove Programs"
 # It is possible to use "mailto:" links in here to open the email client
 !define HELPURL "https://github.com/ripose-jp/Memento/blob/master/README.md" # "Support Information" link