diff --git a/CMakeLists.txt b/CMakeLists.txt
index f6a0d22fe..910213c09 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -12,12 +12,12 @@ set(CLANG_MINIMUM_VERSION "3.4")
 
 # Also remember to set PROTOCOL_VERSION in network/networkprotocol.h when releasing
 set(VERSION_MAJOR 5)
-set(VERSION_MINOR 4)
+set(VERSION_MINOR 5)
 set(VERSION_PATCH 0)
 set(VERSION_EXTRA "" CACHE STRING "Stuff to append to version string")
 
 # Change to false for releases
-set(DEVELOPMENT_BUILD FALSE)
+set(DEVELOPMENT_BUILD TRUE)
 
 set(VERSION_STRING "${VERSION_MAJOR}.${VERSION_MINOR}.${VERSION_PATCH}")
 if(VERSION_EXTRA)
diff --git a/build/android/build.gradle b/build/android/build.gradle
index be9eaada4..3ba51a4bb 100644
--- a/build/android/build.gradle
+++ b/build/android/build.gradle
@@ -1,9 +1,9 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 project.ext.set("versionMajor", 5)      // Version Major
-project.ext.set("versionMinor", 4)      // Version Minor
+project.ext.set("versionMinor", 5)      // Version Minor
 project.ext.set("versionPatch", 0)      // Version Patch
-project.ext.set("versionExtra", "") // Version Extra
+project.ext.set("versionExtra", "-dev") // Version Extra
 project.ext.set("versionCode", 32)      // Android Version Code
 // NOTE: +2 after each release!
 // +1 for ARM and +1 for ARM64 APK's, because
diff --git a/doc/client_lua_api.txt b/doc/client_lua_api.txt
index 098596481..c2c552440 100644
--- a/doc/client_lua_api.txt
+++ b/doc/client_lua_api.txt
@@ -1,4 +1,4 @@
-Minetest Lua Client Modding API Reference 5.4.0
+Minetest Lua Client Modding API Reference 5.5.0
 ================================================
 * More information at <http://www.minetest.net/>
 * Developer Wiki: <http://dev.minetest.net/>
diff --git a/doc/menu_lua_api.txt b/doc/menu_lua_api.txt
index b3975bc1d..90ec527b0 100644
--- a/doc/menu_lua_api.txt
+++ b/doc/menu_lua_api.txt
@@ -1,4 +1,4 @@
-Minetest Lua Mainmenu API Reference 5.4.0
+Minetest Lua Mainmenu API Reference 5.5.0
 =========================================
 
 Introduction