diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..d668f9e
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,15 @@
+## Version 0.4.0
+
+Version 0.4.0 has added support for search-as-you-type when searching for animals to adopt. Furthermore, the display of
+maps in the search has been majorly improved.
+
+Photon has been added as geocoding source option which allows to use this functionality.
+
+Further improvements include the representation of rescue organizations and tooltips.
+
+One of the biggest features is the addition of search subscriptions. These allow you to not only
+search for currently active adoption notices but to subscribe to that search so that you get notified if there are new
+rats in your search area in the future.
+
+For developers the new API documentation might come in handy, it can be found at
+[/api/schema/swagger-ui/](https://notfellchen.org/api/schema/swagger-ui/)