diff --git a/docs/changelog.md b/docs/changelog.md
index 9e3a9be9ed..9c94ef2096 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -1,5 +1,17 @@
 # Changelog
 
+## v0.4.0 - July 28, 2021
+
+**New Features**:
+
+-   Added kepler.gl plotting backend [#88](https://github.com/giswqs/leafmap/issues/88)
+-   Added keplergl sample data [#88](https://github.com/giswqs/leafmap/issues/88)
+-   Added keplergl sample html [#88](https://github.com/giswqs/leafmap/issues/88)
+
+**Improvement**
+
+-   Added CITATIONS.cff
+
 ## v0.3.5 - July 26, 2021
 
 **New Features**:
diff --git a/docs/maps.md b/docs/maps.md
index f85fe0d259..0e8a5ef7bb 100644
--- a/docs/maps.md
+++ b/docs/maps.md
@@ -1,6 +1,6 @@
 # Interactive maps
 
-This page demonstrates some interactive maps created using the kepler.gl plotting backend.
+This page demonstrates some interactive maps created using the [kepler.gl](https://kepler.gl/) plotting backend.
 
 ## Create an interactive map