diff --git a/ChangeLog.md b/ChangeLog.md
index a72cd3ed..d2626924 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,8 @@
 # Changelog
 
+## Version 0.33.3
+* Use macOS 13 for building binaries, as macOS 10.15 seems to no longer be a valid Github target.
+
 ## Version 0.33.2
 * Fix build for building standalone apps.
 
diff --git a/etesync_dav/__init__.py b/etesync_dav/__init__.py
index 40cb8987..c32fa38c 100644
--- a/etesync_dav/__init__.py
+++ b/etesync_dav/__init__.py
@@ -33,7 +33,7 @@
 """
 
 __copyright__ = "Copyright (C) 2017-2024 Tom Hacohen"
-__version__ = "0.33.2"
+__version__ = "0.33.3"
 __license__ = "GPL-3.0-only"
 __author__ = "Tom Hacohen"
 __author_email__ = "tom@stosb.com"