diff --git a/README b/README
index 66af52b70..4ec8f2d4b 100644
--- a/README
+++ b/README
@@ -20,7 +20,7 @@ libstartup-notification at
 http://www.freedesktop.org/software/startup-notification/ or on the
 GNOME ftp site. You also need GConf 1.2 (unless building a funky
 extra-small embedded metacity with --disable-gconf, see below).
-You need Clutter 0.9.3. You need gobject-introspection 0.6.3.
+You need Clutter 1.0. You need gobject-introspection 0.6.3.
 
 REPORTING BUGS AND SUBMITTING PATCHES
 ===
diff --git a/configure.in b/configure.in
index a1173d572..b843a6811 100644
--- a/configure.in
+++ b/configure.in
@@ -227,8 +227,8 @@ else
   AC_MSG_ERROR([no. Mutter requires the Xcomposite extension to build.])
 fi
 
-CLUTTER_VERSION=0.9.3
-CLUTTER_PACKAGE=clutter-0.9
+CLUTTER_VERSION=1.0.0
+CLUTTER_PACKAGE=clutter-1.0
 AC_SUBST(CLUTTER_PACKAGE)
 if $PKG_CONFIG --atleast-version $CLUTTER_VERSION $CLUTTER_PACKAGE ; then
   MUTTER_PC_MODULES="$MUTTER_PC_MODULES $CLUTTER_PACKAGE "