diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4830e7d..236b025 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,7 @@
 # Changelog
 All notable changes to this project will be documented in this file.
 
-## v1.4.0 (XXXX)
+## v1.4.0 (2020-10-26)
 
 **Added**
 - Option pass a callback function in the mappings object. This can be used for path details that have many possible values. See the example mappings.js for an example ([#103](https://github.com/GIScience/Leaflet.Heightgraph/issues/103)).
diff --git a/package-lock.json b/package-lock.json
index 1b3abf7..81f2f5c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "leaflet.heightgraph",
-  "version": "1.3.2",
+  "version": "1.4.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 7296dc7..b610250 100755
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "leaflet.heightgraph",
-  "version": "1.3.3",
+  "version": "1.4.0",
   "description": "Leaflet plugin to visualize height information and road attributes",
   "main": "dist/L.Control.Heightgraph.min.js",
   "module": "dist/L.Control.Heightgraph.min.js",