diff --git a/.gitignore b/.gitignore
index 01b75ad..25ea06d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1 @@
-/gambc-v4_6_1-devel.tgz
+/gambc-v4_6_3-devel.tgz
diff --git a/gambit-c.spec b/gambit-c.spec
index 422edd9..d1393a4 100644
--- a/gambit-c.spec
+++ b/gambit-c.spec
@@ -3,11 +3,11 @@
 # --with termite
 #   The termite distributed programming system is currently broken
 
-%define dirname gambc-v4_6_1-devel
+%define dirname gambc-v4_6_3-devel
 %define termite_rev 080714_2216
 
 Name:           gambit-c
-Version:        4.6.1
+Version:        4.6.3
 Release:        1%{?dist}
 Summary:        Scheme programming system
 
@@ -49,7 +49,7 @@ Requires:       %{name} = %{version}-%{release}
 Requires(post):  info
 Requires(preun): info
 # switch to noarch
-Obsoletes:	gambit-c-doc < %{version}-%{release}
+Obsoletes:      gambit-c-doc < %{version}-%{release}
 %if %{?_with_termite:0}%{!?_with_termite:1}
 Provides:       gambit-c-termite-doc = %{version}-%{release}
 Obsoletes:      gambit-c-termite-doc < %{version}-%{release}
@@ -257,6 +257,9 @@ fi
 
 
 %changelog
+* Wed Feb  1 2012 Michel Salim <salimma@fedoraproject.org> - 4.6.3-1
+- Update to 4.6.3
+
 * Wed Jul 27 2011 Michel Salim <salimma@fedoraproject.org> - 4.6.1-1
 - Update to 4.6.1
 
diff --git a/sources b/sources
index 8217eea..cb2da56 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-7542cde52d4e24704bc49ba67d492f14  gambc-v4_6_1-devel.tgz
+eb9cf8a776e50dda2b510fe9be5cff0f  gambc-v4_6_3-devel.tgz