diff --git a/sigmf/__init__.py b/sigmf/__init__.py
index 6af0426..3c8937b 100644
--- a/sigmf/__init__.py
+++ b/sigmf/__init__.py
@@ -7,7 +7,7 @@
 # version of this python module
 __version__ = "1.2.9"
 # matching version of the SigMF specification
-__specification__ = "1.2.3"
+__specification__ = "1.2.5"
 
 from . import archive, archivereader, error, schema, sigmffile, utils, validate
 from .archive import SigMFArchive