diff --git a/ANNOUNCE b/ANNOUNCE
index 73a92d101..cc6827f19 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -45,6 +45,7 @@ version 1.4.13beta02 [January 22, 2013]
 version 1.4.13beta03 [June 18, 2013]
   Avoid a possible memory leak in contrib/gregbook/readpng.c
   Removed a redundant test from png_set_IHDR().
+  Revised libpng.3 so that "doclifter" can process it.
 
 version 1.4.13beta04 [June 18, 2013]
 
diff --git a/CHANGES b/CHANGES
index 7d06cd94c..cb5de977d 100644
--- a/CHANGES
+++ b/CHANGES
@@ -2887,7 +2887,7 @@ version 1.4.13beta02 [January 22, 2013]
 version 1.4.13beta03 [June 18, 2013]
   Avoid a possible memory leak in contrib/gregbook/readpng.c
   Removed a redundant test from png_set_IHDR().
-  Revised libpng.3 so that "doclift" can process it.
+  Revised libpng.3 so that "doclifter" can process it.
 
 version 1.4.13beta04 [June 18, 2013]