diff --git a/CHANGELOG b/CHANGELOG
index 650a3b1..f23bdcd 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,11 @@
 # Changelog
 
+## [0.3.13]
+
+Implement `system_status` endpoint (https://github.com/jrester/tesla_powerwall/issues/31):
+- add `Battery` response type, which is returned by `get_batteries`
+- add `get_energy`, `get_capacity`, `get_batteries`
+
 ## [0.3.12]
 
 - add MeterType `generator` (https://github.com/jrester/tesla_powerwall/issues/30)
diff --git a/setup.py b/setup.py
index c2caf0b..1fdf600 100644
--- a/setup.py
+++ b/setup.py
@@ -7,7 +7,7 @@
     name="tesla_powerwall",
     author="Jrester",
     author_email="jrester379@gmail.com",
-    version='0.3.12',
+    version='0.3.13',
     description="API for Tesla Powerwall",
     long_description=long_description,
     long_description_content_type="text/markdown",
diff --git a/tesla_powerwall/__init__.py b/tesla_powerwall/__init__.py
index 8f7d626..6043a2d 100644
--- a/tesla_powerwall/__init__.py
+++ b/tesla_powerwall/__init__.py
@@ -32,4 +32,4 @@
 )
 from .powerwall import Powerwall
 
-VERSION = "0.3.12"
+VERSION = "0.3.13"