diff --git a/cli/main.cpp b/cli/main.cpp
index be1e0550a..6e0a3b962 100644
--- a/cli/main.cpp
+++ b/cli/main.cpp
@@ -20,7 +20,7 @@
 /**
  *
  * @mainpage Cppcheck
- * @version 1.88
+ * @version 1.88.99
  *
  * @section overview_sec Overview
  * Cppcheck is a simple tool for static analysis of C/C++ code.
diff --git a/cmake/versions.cmake b/cmake/versions.cmake
index 7af1fcac2..6c0b71de0 100644
--- a/cmake/versions.cmake
+++ b/cmake/versions.cmake
@@ -1,5 +1,5 @@
 # Version for libraries CPP
-SET(VERSION "1.88")
+SET(VERSION "1.88.99")
 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 507bb8c5c..e14574093 100644
--- a/lib/version.h
+++ b/lib/version.h
@@ -1,6 +1,6 @@
 #define CPPCHECK_MAJOR 1
 #define CPPCHECK_MINOR 88
-#define CPPCHECK_DEVMINOR 88
+#define CPPCHECK_DEVMINOR 89
 
 #define STRINGIFY(x) STRING(x)
 #define STRING(VER) #VER
diff --git a/man/manual.docbook b/man/manual.docbook
index fbf7c74b0..519773ed8 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 1.88</title>
+    <title>Cppcheck 1.89 dev</title>
 
     <date>2018-04-23</date>
   </bookinfo>
diff --git a/win_installer/productInfo.wxi b/win_installer/productInfo.wxi
index 0403dc9d7..fa3c8d86c 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) 1.88" ?>
+  <?define ProductName = "Cppcheck $(var.Platform) 1.89 dev" ?>
   <?define ProductNameShort = "Cppcheck" ?>
-  <?define ProductVersion = "1.88" ?>
+  <?define ProductVersion = "1.88.99" ?>
 
   <?define ProductManufacturer = "The Cppcheck team" ?>
   <?define ProductDescription = "Cppcheck is a tool for static analysis of C/C++ code" ?>