diff --git a/CHANGES.md b/CHANGES.md
index 7d29ead..04558f5 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,13 @@
 # Change Log
 
+## 0.1.0 (2021-06-21)
+
+The first official release of pddl.
+
+Main features:
+* Specify PDDL domains and problems programmatically.
+* Parsing for PDDL domains and problems.
+
 ## 0.0.1 (2020-07-30)
 
 * First commit on the package.
diff --git a/setup.py b/setup.py
index 923cbba..97dbd84 100644
--- a/setup.py
+++ b/setup.py
@@ -54,7 +54,7 @@
     long_description=readme + '\n\n' + history,
     long_description_content_type="text/markdown",
     classifiers=[
-        'Development Status :: 1 - Pre-Alpha',
+        'Development Status :: 2 - Pre-Alpha',
         'Intended Audience :: Education',
         'License :: OSI Approved :: GNU Lesser General Public License v3 or later (LGPLv3+)',
         'Natural Language :: English',