diff --git a/README.rst b/README.rst
index a20cab9..733dd29 100644
--- a/README.rst
+++ b/README.rst
@@ -138,6 +138,17 @@ How to write django-admin2 modules
   djadmin2.default.register(Comment)
   djadmin2.default.register(User, UserAdmin2)
 
+Migrating from 0.5.x
+====================
+
+Themes are now defined explicitly, including the default theme. Therefore, your `settings` need to include this:
+
+.. code-block:: python
+
+    # In settings.py
+    INSTALLED_APPS += ('djadmin2.themes.djadmin2theme_default',)
+    ADMIN2_THEME_DIRECTORY = "djadmin2theme_default/"
+
 
 Drop-In Themes
 ===============
diff --git a/docs/installation.rst b/docs/installation.rst
index d952969..4d39e3b 100644
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -49,3 +49,14 @@ Development Installation
 =========================
 
 See :doc:`contributing`.
+
+Migrating from 0.5.x
+====================
+
+Themes are now defined explicitly, including the default theme. Therefore, your `settings` need to include this:
+
+.. code-block:: python
+
+    # In settings.py
+    INSTALLED_APPS += ('djadmin2.themes.djadmin2theme_default',)
+    ADMIN2_THEME_DIRECTORY = "djadmin2theme_default/"