diff --git a/include/ChangeLog b/include/ChangeLog
index 48981996dd41..c3f823857f1a 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,8 @@
+2012-05-19  Gary Funck  <gary@intrepid.com>
+
+	* dwarf2.def: Update comment re: UPC extensions to reference
+	DWARF4 specification.
+
 2012-05-02  Cary Coutant  <ccoutant@google.com>
 
 	* dwarf2.def: Remove DW_FORM_GNU_ref_index,
diff --git a/include/dwarf2.def b/include/dwarf2.def
index e36ae919b2ab..870aecdaa544 100644
--- a/include/dwarf2.def
+++ b/include/dwarf2.def
@@ -167,7 +167,7 @@ DW_TAG (DW_TAG_GNU_formal_parameter_pack, 0x4108)
    are properly part of DWARF 5.  */
 DW_TAG (DW_TAG_GNU_call_site, 0x4109)
 DW_TAG (DW_TAG_GNU_call_site_parameter, 0x410a)
-/* Extensions for UPC.  See: http://upc.gwu.edu/~upc.  */
+/* Extensions for UPC.  See: http://dwarfstd.org/doc/DWARF4.pdf.  */
 DW_TAG (DW_TAG_upc_shared_type, 0x8765)
 DW_TAG (DW_TAG_upc_strict_type, 0x8766)
 DW_TAG (DW_TAG_upc_relaxed_type, 0x8767)