diff --git a/stdafx.cpp b/stdafx.cpp
index 0e9cda9150f..f53718e7c9c 100644
--- a/stdafx.cpp
+++ b/stdafx.cpp
@@ -32,6 +32,6 @@
 
 namespace mongo {
 
-    const char versionString[] = "1.4.5";
+    const char versionString[] = "1.4.6-pre-";
 
 } // namespace mongo