diff --git a/cmake/versions.cmake b/cmake/versions.cmake
index 01fe6d9be..24477764e 100644
--- a/cmake/versions.cmake
+++ b/cmake/versions.cmake
@@ -1,5 +1,5 @@
 # Version for libraries CPP
-SET(VERSION "2.5")
+SET(VERSION "2.5.99")
 STRING(REGEX MATCHALL "[0-9]" VERSION_PARTS "${VERSION}")
 LIST(GET VERSION_PARTS 0 VERSION_MAJOR)
 LIST(GET VERSION_PARTS 1 VERSION_MINOR)
diff --git a/lib/version.h b/lib/version.h
index a94684b22..25c0ab920 100644
--- a/lib/version.h
+++ b/lib/version.h
@@ -3,7 +3,7 @@
 
 #define CPPCHECK_MAJOR 2
 #define CPPCHECK_MINOR 5
-#define CPPCHECK_DEVMINOR 5
+#define CPPCHECK_DEVMINOR 6
 
 #define STRINGIFY(x) STRING(x)
 #define STRING(VER) #VER
diff --git a/win_installer/productInfo.wxi b/win_installer/productInfo.wxi
index 6101f6f3b..1ba16634e 100644
--- a/win_installer/productInfo.wxi
+++ b/win_installer/productInfo.wxi
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Include>
-  <?define ProductName = "Cppcheck $(var.Platform) 2.5" ?>
+  <?define ProductName = "Cppcheck $(var.Platform) 2.5 dev" ?>
   <?define ProductNameShort = "Cppcheck" ?>
-  <?define ProductVersion = "2.5" ?>
+  <?define ProductVersion = "2.5.99" ?>
 
   <?define ProductManufacturer = "The Cppcheck team" ?>
   <?define ProductDescription = "Cppcheck is a tool for static analysis of C/C++ code" ?>