diff --git a/src/napatrackmater/Trackvector.py b/src/napatrackmater/Trackvector.py
index a49c7b05..ee17c8a3 100644
--- a/src/napatrackmater/Trackvector.py
+++ b/src/napatrackmater/Trackvector.py
@@ -864,7 +864,7 @@ def unsupervised_clustering(
             shape_dynamic_track_array.shape[0]
             == shape_track_array.shape[0]
             == dynamic_track_array.shape[0]
-        ), "Shape dynamic, shape and dynamic track arrays must have the same length"
+        ), "Shape dynamic, shape and dynamic track arrays must have the same length."
         if shape_dynamic_track_array.shape[0] > 1:
             (
                 shape_dynamic_covariance,
diff --git a/src/napatrackmater/_version.py b/src/napatrackmater/_version.py
index f591e582..ee366c2e 100644
--- a/src/napatrackmater/_version.py
+++ b/src/napatrackmater/_version.py
@@ -1,2 +1,2 @@
-__version__ = version = "4.4.3"
-__version_tuple__ = version_tuple = (4, 4, 3)
+__version__ = version = "4.4.5"
+__version_tuple__ = version_tuple = (4, 4, 5)