diff --git a/changelog.md b/changelog.md
index 903975f..31a19b5 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,3 +1,14 @@
+# 0.4.0
+
+* Third party libraries deduplicated and minified
+* Add text reminder for multibit wallet change addresses
+* Seed field can be edited
+* Add bitcoin regtest parameters
+* Mnemonic conversion to entropy is hex encoded instead of binary
+* Entropy type can be manually selected
+* Add Bitcoin P2WSH and P2WSH-P2SH
+* Add Czech language
+
 # 0.3.14
 
 * Ethereum uses standard BIP44 as per majority of wallets (Issue 378)
diff --git a/src/index.html b/src/index.html
index 2de2b3d..2bf7c6a 100644
--- a/src/index.html
+++ b/src/index.html
@@ -15,7 +15,7 @@
         <div class="container">
 
             <h1 class="text-center">Mnemonic Code Converter</h1>
-            <p class="version">v0.3.14</p>
+            <p class="version">v0.4.0</p>
             <hr>
             <div class="row">
                 <div class="col-md-12">