Copyright for 1992 added
diff --git a/Include/dictobject.h b/Include/dictobject.h
index a9d72cb..2c5d539 100644
--- a/Include/dictobject.h
+++ b/Include/dictobject.h
@@ -1,5 +1,5 @@
 /***********************************************************
-Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The
+Copyright 1991, 1992 by Stichting Mathematisch Centrum, Amsterdam, The
 Netherlands.
 
                         All Rights Reserved