diff --git a/.gitignore b/.gitignore
index 8fe6704..e2a6048 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,4 @@ mesa-20100720.tar.bz2
 /mesa-20101108.tar.bz2
 /mesa-20101118.tar.bz2
 /mesa-20101129.tar.bz2
+/mesa-20101214.tar.xz
diff --git a/make-git-snapshot.sh b/make-git-snapshot.sh
index 258a736..56389a7 100755
--- a/make-git-snapshot.sh
+++ b/make-git-snapshot.sh
@@ -17,6 +17,6 @@ git clone ${REF:+--reference $REF} \
 	git://git.freedesktop.org/git/mesa/mesa $DIRNAME
 
 GIT_DIR=$DIRNAME/.git git archive --format=tar --prefix=$DIRNAME/ ${1:-HEAD} \
-	| bzip2 > $DIRNAME.tar.bz2
+	| xz > $DIRNAME.tar.xz
 
 # rm -rf $DIRNAME
diff --git a/mesa.spec b/mesa.spec
index 19cf838..3693caf 100644
--- a/mesa.spec
+++ b/mesa.spec
@@ -9,20 +9,20 @@
 %define _default_patch_fuzz 2
 
 %define manpages gl-manpages-1.0.1
-%define gitdate 20101129
+%define gitdate 20101214
 #% define snapshot 
 
 Summary: Mesa graphics libraries
 Name: mesa
 Version: 7.10
-Release: 0.15%{?dist}
+Release: 0.16%{?dist}
 License: MIT
 Group: System Environment/Libraries
 URL: http://www.mesa3d.org
 
 #Source0: http://downloads.sf.net/mesa3d/MesaLib-%{version}.tar.bz2
 #Source0: http://www.mesa3d.org/beta/MesaLib-%{version}%{?snapshot}.tar.bz2
-Source0: %{name}-%{gitdate}.tar.bz2
+Source0: %{name}-%{gitdate}.tar.xz
 Source2: %{manpages}.tar.bz2
 Source3: make-git-snapshot.sh
 
@@ -416,6 +416,10 @@ rm -rf $RPM_BUILD_ROOT
 %{_libdir}/libOSMesa.so
 
 %changelog
+* Wed Dec 15 2010 Adam Jackson <ajax@redhat.com> 7.10-0.16
+- Today's (yesterday's) git snap.
+- Switch the sourceball to xz.
+
 * Mon Dec 06 2010 Adam Jackson <ajax@redhat.com> 7.10-0.15
 - Really disable gallium EGL.  Requires disabling OpenVG due to buildsystem
   nonsense.  Someone fix that someday. (Patch from krh)
diff --git a/sources b/sources
index 9c3a2c3..ec66ad9 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
 6ae05158e678f4594343f32c2ca50515  gl-manpages-1.0.1.tar.bz2
-8533e738b34728fb6d975f15f8c71157  mesa-20101129.tar.bz2
+ac2cd29c8013709582c09a390a98b4b6  mesa-20101214.tar.xz