diff --git a/cli/cppcheck.rc b/cli/cppcheck.rc
index 13d250922..b8826249c 100644
--- a/cli/cppcheck.rc
+++ b/cli/cppcheck.rc
@@ -56,13 +56,13 @@ END
 //
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 1,54,0,0
- PRODUCTVERSION 1,54,0,0
+ FILEVERSION 0,0,0,0
+ PRODUCTVERSION 0,0,0,0
  FILEFLAGSMASK 0x17L
 #ifdef _DEBUG
- FILEFLAGS 0x1L
+ FILEFLAGS (0x1L|VS_FF_PRERELEASE)
 #else
- FILEFLAGS 0x0L
+ FILEFLAGS (0x0L|VS_FF_PRERELEASE)
 #endif
  FILEOS 0x4L
  FILETYPE 0x1L
@@ -73,12 +73,12 @@ BEGIN
         BLOCK "040904b0"
         BEGIN
             VALUE "FileDescription", "cppcheck Application"
-            VALUE "FileVersion", "1.54"
+            VALUE "FileVersion", "1.55 dev"
             VALUE "InternalName", "cppcheck"
             VALUE "LegalCopyright", "Copyright (C) 2007-2012 Daniel Marjamäki and Cppcheck team."
             VALUE "OriginalFilename", "cppcheck.exe"
             VALUE "ProductName", "cppcheck Application"
-            VALUE "ProductVersion", "1.54"
+            VALUE "ProductVersion", "1.55 dev"
         END
     END
     BLOCK "VarFileInfo"
diff --git a/lib/cppcheck.cpp b/lib/cppcheck.cpp
index b274f2f72..33f278512 100644
--- a/lib/cppcheck.cpp
+++ b/lib/cppcheck.cpp
@@ -34,7 +34,7 @@
 #include <pcre.h>
 #endif
 
-static const char Version[] = "1.54";
+static const char Version[] = "1.55 dev";
 static const char ExtraVersion[] = "";
 
 static TimerResults S_timerResults;
diff --git a/man/manual.docbook b/man/manual.docbook
index 7c51573de..d2ee1ad72 100644
--- a/man/manual.docbook
+++ b/man/manual.docbook
@@ -3,7 +3,7 @@
 "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd">
 <book>
   <bookinfo>
-    <title>Cppcheck 1.54</title>
+    <title>Cppcheck 1.55 dev</title>
 
     <date>2012-04-08</date>
   </bookinfo>
diff --git a/win_installer/productInfo.wxi b/win_installer/productInfo.wxi
index 5551bdce8..9faa6655e 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 1.54" ?>
+  <?define ProductName = "Cppcheck 1.55 dev" ?>
   <?define ProductNameShort = "Cppcheck" ?>
-  <?define ProductVersion = "1.54.0" ?>
+  <?define ProductVersion = "1.55.dev" ?>
 
   <?define ProductManufacturer = "The Cppcheck team" ?>
   <?define ProductDescription = "Cppcheck is a tool for static analysis of C/C++ code" ?>