diff --git a/antlr.spec b/antlr.spec
index d7bc400..84d0b95 100644
--- a/antlr.spec
+++ b/antlr.spec
@@ -61,6 +61,7 @@ BuildArch:      noarch
 %endif
 BuildRequires:  ant
 BuildRequires:  %{__perl}, java-javadoc
+BuildRequires:  hack-libgcj
 Requires:       jpackage-utils
 Requires(post): %{_sbindir}/update-alternatives
 Requires(postun): %{_sbindir}/update-alternatives
@@ -280,6 +281,7 @@ ln -s %{name}-%{version} %{_javadocdir}/%{name}
 
 %changelog
 * Fri Jul 21 2006 Thomas Fitzsimmons <fitzsim@redhat.com> - 0:2.7.6-3jpp_3fc
+- Require hack-libgcj for build.
 - Bump release number.
 
 * Wed Jul 19 2006 Deepak Bhole <dbhole@redhat.om> = 0:2.7.6-3jpp_2fc