diff --git a/stac_validator/stac_validator.py b/stac_validator/stac_validator.py
index 0f5b3bb0..06546970 100644
--- a/stac_validator/stac_validator.py
+++ b/stac_validator/stac_validator.py
@@ -11,7 +11,7 @@
 from pystac.serialization import identify_stac_object  # type: ignore
 from requests import exceptions
 
-NEW_VERSIONS = ["1.0.0-beta.2", "1.0.0-rc.1", "1.0.0-rc.2"]
+NEW_VERSIONS = ["1.0.0-beta.2", "1.0.0-rc.1", "1.0.0-rc.2", "1.0.0-rc.3"]
 
 
 class StacValidate: