diff --git a/apache-commons-codec.spec b/apache-commons-codec.spec
index 09d4c5e..49fc5b5 100644
--- a/apache-commons-codec.spec
+++ b/apache-commons-codec.spec
@@ -1,3 +1,7 @@
+# READ BEFORE UPDATING: After updating this package to new upstream
+# version eclipse-ecf should be rebuilt.  For more info, see:
+# https://fedoraproject.org/wiki/SIGs/Java#Package_Update.2FRebuild_Notes
+
 %global base_name codec
 %global short_name commons-%{base_name}