diff --git a/docs/en-US/Installation_Guide.xml b/docs/en-US/Installation_Guide.xml
index 8e4ff7f37ab..a40ceed0856 100644
--- a/docs/en-US/Installation_Guide.xml
+++ b/docs/en-US/Installation_Guide.xml
@@ -26,7 +26,7 @@
     <bookinfo id="book-installation">
         <title>&PRODUCT; Installation Guide</title>
         <productname>Apache CloudStack</productname>
-        <productnumber>4.0</productnumber>
+        <productnumber>4.0.0-incubating</productnumber>
         <edition>1</edition>
         <pubsnumber></pubsnumber>
         <abstract>