diff --git a/PyCO2SYS/meta.py b/PyCO2SYS/meta.py
index 37b0d622..b12a5f77 100644
--- a/PyCO2SYS/meta.py
+++ b/PyCO2SYS/meta.py
@@ -4,8 +4,8 @@
 import jax
 from jax import numpy as np
 
-version = "1.8.3.1"
-version_xyz = "1.8.3"
+version = "2.0.0"
+version_xyz = "2.0.0"
 authorlist = [
     "Humphreys, Matthew P.",
     "Schiller, Abigail J.",