diff --git a/ANNOUNCE b/ANNOUNCE
index 0205c60ee..8a7453aa1 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -26,7 +26,7 @@ Other information:
 
 Changes since the last public release (1.5.11):
 
-Version 1.5.12 [June 25, 2012]
+Version 1.5.12beta01 [June 25, 2012]
 
   Removed scripts/makefile.cegcc from the *.zip and *.7z distributions; it
     depends on configure, which is not included in those archives.
diff --git a/CHANGES b/CHANGES
index fee3f9c0d..87dc6c193 100644
--- a/CHANGES
+++ b/CHANGES
@@ -3891,7 +3891,7 @@ Version 1.5.11rc05 [June 7, 2012]
 Version 1.5.11 [June 14, 2012]
   Include zlib.h in contrib/gregbook and contrib/visupng examples.
 
-Version 1.5.12 [June 25, 2012]
+Version 1.5.12beta01 [June 25, 2012]
   Removed scripts/makefile.cegcc from the *.zip and *.7z distributions; it
     depends on configure, which is not included in those archives.