diff --git a/mono-core.changes b/mono-core.changes
index 00929ba..7fa318f 100644
--- a/mono-core.changes
+++ b/mono-core.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Mon Apr  4 20:08:54 UTC 2011 - ajorgensen@novell.com
+
+- libmono devel package must require libmono
+
 -------------------------------------------------------------------
 Tue Feb 22 17:13:37 UTC 2011 - ajorgensen@novell.com
 
diff --git a/mono-core.spec b/mono-core.spec
index d3c1c74..11d2dff 100644
--- a/mono-core.spec
+++ b/mono-core.spec
@@ -332,6 +332,7 @@ A Library for embedding Mono in your Application.
 License:        LGPLv2.1
 Summary:        Development files for libmono
 Group:          Development/Languages/Mono
+Requires:       libmono-2_0-1 == %version-%release
 Requires:       mono-core == %version-%release
 
 %description -n libmono-2_0-devel