diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5c04a0e..443f94d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,13 @@
 Changelog
 =========
 
+0.3
+-----
+
+Changes:
+
+- Rename common module `interchange` to `envelop` for fitting X12's language.
+
 0.2
 -----
 
diff --git a/setup.py b/setup.py
index 93c5783..957d39a 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 
 setuptools.setup(
     name="pyx12lib",
-    version="0.2",
+    version="0.3",
     author="CJHwong",
     author_email="pypi@hardcoretech.co",
     url="https://github.com/hardcoretech/pyx12-lib",