diff --git a/ANNOUNCE b/ANNOUNCE
index 377a79e3f..6e56baa83 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -39,7 +39,7 @@ Version 1.6.9beta01 [December 26, 2013]
     segment of the DLL by 1208 bytes, about 0.6%. It also simplifies
     maintenance by removing the declarations from pngpriv.h and allowing
     easier changes to the internal interfaces.
-  Rebuilt configure scripts with automake-1.14.1 and autoconf-2.59(2013)
+  Rebuilt configure scripts with automake-1.14.1 and autoconf-2.69
     in the tar distributions.
 
 Version 1.6.9beta02 [December 26, 2013]
diff --git a/CHANGES b/CHANGES
index 10e726904..80e1f2be9 100644
--- a/CHANGES
+++ b/CHANGES
@@ -4764,7 +4764,7 @@ Version 1.6.9beta01 [December 26, 2013]
     segment of the DLL by 1208 bytes, about 0.6%. It also simplifies
     maintenance by removing the declarations from pngpriv.h and allowing
     easier changes to the internal interfaces.
-  Rebuilt configure scripts with automake-1.14.1 and autoconf-2.59(2013)
+  Rebuilt configure scripts with automake-1.14.1 and autoconf-2.69
     in the tar distributions.
 
 Version 1.6.9beta02 [December 26, 2013]