diff --git a/CHANGELOG.md b/CHANGELOG.md
index 750ef61..3c7fdaf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,16 @@ and adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ### ✨ Enhancements
 
+### 🐛 Bug fixes
+
+### 📚 Documentation and demo website changes
+
+### 🔧 Internal changes
+
+## [0.4.0] - 2024-11-19
+
+### ✨ Enhancements
+
 -   Added transparent and dark mode versions of the logos!
 -   Added functionality to set a default width for automatic-layout diagrams if not specified,
     and to crop unused space if necessary.
diff --git a/memory-viz/package.json b/memory-viz/package.json
index 4a247bf..02c2128 100644
--- a/memory-viz/package.json
+++ b/memory-viz/package.json
@@ -1,6 +1,6 @@
 {
     "name": "memory-viz",
-    "version": "0.3.2",
+    "version": "0.4.0",
     "description": "Library for creating beginner-friendly memory model diagrams.",
     "main": "dist/memory-viz.bundle.js",
     "homepage": "https://www.cs.toronto.edu/~david/memory-viz",
diff --git a/package-lock.json b/package-lock.json
index 149659e..b265e9d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -78,7 +78,7 @@
             }
         },
         "memory-viz": {
-            "version": "0.3.2",
+            "version": "0.4.0",
             "license": "MIT",
             "dependencies": {
                 "@xmldom/xmldom": "^0.8.10",