diff --git a/gillespy2/__version__.py b/gillespy2/__version__.py
index db702e5ee..74c10716a 100644
--- a/gillespy2/__version__.py
+++ b/gillespy2/__version__.py
@@ -6,7 +6,7 @@
 # =============================================================================
 
 
-__version__      = '1.5.9'
+__version__      = '1.5.10'
 
 __title__        = 'GillesPy2'
 __description__  = 'Python interface for Gillespie-style biochemical simulations'
@@ -15,4 +15,4 @@
 __author__       = 'See AUTHORS'
 __email__        = 'bdrawert@unca.edu'
 __license__      = 'GPL'
-__copyright__    = 'Copyright (C) 2017-2020'
+__copyright__    = 'Copyright (C) 2017-2021'