diff --git a/README.rst b/README.rst
index faacc53..baedfe8 100644
--- a/README.rst
+++ b/README.rst
@@ -65,7 +65,7 @@ For more in-depth documentation, please see `https://stix2.readthedocs.io/ <http
 STIX 2.X Technical Specification Support
 ----------------------------------------
 
-This version of python-stix2 supports STIX 2.0 by default. Although, the
+This version of python-stix2 supports STIX 2.1 by default. Although, the
 `stix2` Python library is built to support multiple versions of the STIX
 Technical Specification. With every major release of stix2 the ``import stix2``
 statement will automatically load the SDO/SROs equivalent to the most recent