diff --git a/lib/ants/_version.py b/lib/ants/_version.py
index 023d3d3..0b74679 100644
--- a/lib/ants/_version.py
+++ b/lib/ants/_version.py
@@ -3,4 +3,4 @@
 # This file is part of ANTS and is released under the BSD 3-Clause license.
 # See LICENSE.txt in the root of the repository for full licensing details.
 """Define the fallback version to be used when ANTS is not installed into an environment."""  # noqa: E501
-FALLBACK_VERSION = "3.2.0dev"
+FALLBACK_VERSION = "3.3.0dev"