diff --git a/bootstrap b/bootstrap
index f72e3406c..712a8c897 100755
--- a/bootstrap
+++ b/bootstrap
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Run this to set configure.in up for an API version.
 
-GTK_SHARP_VERSION=2.5.5
+GTK_SHARP_VERSION=2.5.5.99
 
 srcdir=`dirname $0`
 test -z "$srcdir" && srcdir=.
diff --git a/bootstrap-2.4 b/bootstrap-2.4
index b931b2cea..5c7cc144c 100755
--- a/bootstrap-2.4
+++ b/bootstrap-2.4
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Run this to set configure.in up for an API version.
 
-GTK_SHARP_VERSION=1.9.5
+GTK_SHARP_VERSION=1.9.5.99
 
 srcdir=`dirname $0`
 test -z "$srcdir" && srcdir=.