diff --git a/slf4j.spec b/slf4j.spec
index af73a75..66df240 100644
--- a/slf4j.spec
+++ b/slf4j.spec
@@ -30,7 +30,7 @@
 
 Name:           slf4j
 Version:        1.5.10
-Release:        4%{?dist}
+Release:        5%{?dist}
 Epoch:          0
 Summary:        Simple Logging Facade for Java
 Group:          Development/Libraries
@@ -66,6 +66,7 @@ BuildRequires:  log4j
 BuildRequires:  jakarta-commons-logging
 BuildRequires:  cal10n
 Requires:       jpackage-utils
+Requires:       cal10n
 Requires:       java
 BuildArch:      noarch
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root
@@ -263,6 +264,9 @@ rm -rf $RPM_BUILD_ROOT
 %{_docdir}/%{name}-%{version}/site
 
 %changelog
+* Wed Feb 10 2010 Mary Ellen Foster <mefoster at gmail.com> 0:1.5.10-5
+- Require cal10n
+
 * Wed Feb 10 2010 Alexander Kurtakov <akurtako@redhat.com> 0:1.5.10-4
 - Fix javadoc files.