diff --git a/miepython/__init__.py b/miepython/__init__.py
index 8a57333..d0f3b9c 100644
--- a/miepython/__init__.py
+++ b/miepython/__init__.py
@@ -42,7 +42,7 @@
     miepython.mie_phase_matrix(m, x, mu)
 
 """
-__version__ = '2.5.4'
+__version__ = '2.5.5'
 __author__ = 'Scott Prahl'
 __email__ = 'scott.prahl@oit.edu'
 __copyright__ = '2017-24, Scott Prahl'