diff --git a/bindings/python/pymongoarrow/version.py b/bindings/python/pymongoarrow/version.py
index 5dc0e042..49f30bc7 100644
--- a/bindings/python/pymongoarrow/version.py
+++ b/bindings/python/pymongoarrow/version.py
@@ -12,6 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "1.5.2"
+__version__ = "1.6.0.dev0"
 
 _MIN_LIBBSON_VERSION = "1.23.1"