diff --git a/bcel.spec b/bcel.spec
index 5ec521c..4ea0e61 100644
--- a/bcel.spec
+++ b/bcel.spec
@@ -77,6 +77,7 @@ BuildRequires:  velocity
 BuildRequires:  regexp
 BuildRequires:  jpackage-utils >= 0:1.6
 BuildRequires:  werken.xpath
+BuildRequires:  ant-apache-regexp
 %if ! %{gcj_support}
 BuildArch:      noarch
 %endif