diff --git a/docs/LangRef.html b/docs/LangRef.html
index 60777ad..346f858 100644
--- a/docs/LangRef.html
+++ b/docs/LangRef.html
@@ -738,8 +738,11 @@
     target-specific</dd>
     <dt><tt>sret</tt></dt>
     <dd>This indicates that the parameter specifies the address of a structure
-    that is the return value of the function in the source program.
-    </dd>
+    that is the return value of the function in the source program.</dd>
+    <dt><tt>nounwind</tt></dt>
+    <dd>This function attribute indicates that the function type does not use
+    the unwind instruction and does not allow stack unwinding to propagate
+    through it.</dd>
   </dl>
 
 </div>