diff --git a/src/onbeyond/z4/0800-08ff.pak b/src/onbeyond/z4/0800-08ff.pak
index e4d9917..6837869 100644
Binary files a/src/onbeyond/z4/0800-08ff.pak and b/src/onbeyond/z4/0800-08ff.pak differ
diff --git a/src/onbeyond/z4/d500-f7ff.pak b/src/onbeyond/z4/d500-f7ff.pak
index d5af237..42da397 100644
Binary files a/src/onbeyond/z4/d500-f7ff.pak and b/src/onbeyond/z4/d500-f7ff.pak differ
diff --git a/src/onbeyond/z4/z4.s b/src/onbeyond/z4/z4.s
index 269458c..fceb837 100644
--- a/src/onbeyond/z4/z4.s
+++ b/src/onbeyond/z4/z4.s
@@ -1,6 +1,6 @@
 ;license:BSD-3-Clause
 ;extended open/read/write binary file in ProDOS filesystem, with random access
-;copyright (c) Peter Ferrie 2013-19
+;copyright (c) Peter Ferrie 2013-19, 2023
 
 ver_02 = 1
 
@@ -12,7 +12,7 @@ ver_02 = 1
 !to "build/ONBEYONDZ4",plain
 *=$3000
 
-!macro version {!scrxor $80, "2/191025"}
+!macro version {!scrxor $80, "3/230502"}
 
 xsechi=$b1
 xseclo=$b0