diff --git a/setup.cfg b/setup.cfg
index e135ce9..929fcf1 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -25,7 +25,7 @@ classifiers =
     Operating System :: Unix
     Operating System :: OS Independent
     Environment :: Console
-    Development Status :: 4 - Beta
+    Development Status :: 5 - Production/Stable
     Intended Audience :: Developers
     Topic :: Software Development :: Libraries :: Python Modules
     Intended Audience :: End Users/Desktop
diff --git a/tzolkin_calendar/__init__.py b/tzolkin_calendar/__init__.py
index b466aeb..64b9eff 100644
--- a/tzolkin_calendar/__init__.py
+++ b/tzolkin_calendar/__init__.py
@@ -13,7 +13,7 @@
 
 __all__ = ["calculate", "tzolkin"]
 
-VERSION: str = "0.9.10"
+VERSION: str = "1.0.0"
 
 
 ################################################################################