diff --git a/ANNOUNCE b/ANNOUNCE
index 647f76a0..12965e4a 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -38,16 +38,9 @@ Other information:
    libpng-1.2.58beta01-[previous version]-diff.txt
    libpng-1.2.58beta01-*.asc (armored detached GPG signatures)
 
-Changes since the last public release (1.2.56):
+Changes since the last public release (1.2.57):
 
-version 1.2.57rc01 [December 27, 2016]
-  Fix typos in libpng.3 synopses (Eric S. Raymond).
-  Fixed undefined behavior in png_push_save_buffer(). Do not call
-    memcpy() with a null source, even if count is zero (Leon Scroggins III).
-
-version 1.0.67 and 1.2.57 [December 29, 2016]
-  Fixed a potential null pointer dereference in png_set_text_2() (bug report
-    and patch by Patrick Keshishian).
+version 1.2.58beta01 [December 30, 2016]
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
diff --git a/CHANGES b/CHANGES
index f4b0c0bf..1b52aef9 100644
--- a/CHANGES
+++ b/CHANGES
@@ -2929,6 +2929,8 @@ version 1.0.67 and 1.2.57 [December 29, 2016]
   Fixed a potential null pointer dereference in png_set_text_2() (bug report
     and patch by Patrick Keshishian).
 
+version 1.2.58beta01 [December 30, 2016]
+
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement