diff --git a/expect.spec b/expect.spec
index 717c4a6..0cf1bac 100644
--- a/expect.spec
+++ b/expect.spec
@@ -3,13 +3,13 @@
 Summary: A program-script interaction and testing utility
 Name: expect
 Version: %{majorver}.0
-Release: 4
+Release: 5
 License: Public Domain
 Group: Development/Languages
 URL: http://expect.nist.gov/
 Source: http://expect.nist.gov/src/%{name}-%{version}.tar.gz
 BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root
-Buildrequires: tcl-devel tk-devel autoconf automake
+Buildrequires: tcl-devel tk-devel autoconf automake libX11-devel
 
 Patch6: expect-5.38.0-spawn-43310.patch
 Patch8: expect-5.43.0-cfg-setpgrp.patch
@@ -153,6 +153,9 @@ rm -rf $RPM_BUILD_ROOT
 %{_mandir}/man1/tknewsbiff.1*
 
 %changelog
+* Mon May 15 2006 David Cantrell <dcantrell@redhat.com> - 5.43.0-5
+- BuildRequires libX11-devel
+
 * Fri Feb 24 2006 David Cantrell <dcantrell@redhat.com> - 5.43.0-4
 - Patch expLogChannelOpen() to create files with 0666 permissions (#182724)