diff --git a/CHANGES b/CHANGES
index 65bd636..ff786e4 100644
--- a/CHANGES
+++ b/CHANGES
@@ -4,6 +4,7 @@ Version History
 Version 0.9.9 (unreleased)
 --------------------------
 * Test test_47_azure_ajax_translation: avoid DNS lookup for better isolation. Should fix #233
+* Adds Chinese (Simplified) translation. (#266 thanks @chenluyong)
 
 
 Version 0.9.8
diff --git a/tox.ini b/tox.ini
index 385ea26..f852f1e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -66,6 +66,8 @@ commands =
       msgfmt -c -o ru/LC_MESSAGES/django.mo ru/LC_MESSAGES/django.po
       msgfmt -c -o tr/LC_MESSAGES/django.mo tr/LC_MESSAGES/django.po
       msgfmt -c -o uk/LC_MESSAGES/django.mo uk/LC_MESSAGES/django.po
+      msgfmt -c -o zh_hans/LC_MESSAGES/django.mo zh_hans/LC_MESSAGES/django.po
+
 
 [testenv:docs]
 deps = sphinx