diff --git a/pkgs/by-name/wa/wambo/package.nix b/pkgs/by-name/wa/wambo/package.nix
index fe79c186259b..e700bdbbeb2a 100644
--- a/pkgs/by-name/wa/wambo/package.nix
+++ b/pkgs/by-name/wa/wambo/package.nix
@@ -5,14 +5,14 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "wambo";
-  version = "0.3.1";
+  version = "0.4.0";
 
   src = fetchCrate {
     inherit pname version;
-    hash = "sha256-WZQgQmoFmsWLgPYRWonJmyKq9IIJ+a6J+O19XPppJG4=";
+    hash = "sha256-3EwNC78DhSXbVFSg6q+66yge4S1m5icJ5nOhoy9qsRI=";
   };
 
-  cargoHash = "sha256-ghUdhWW5gURWxj/OhbcKPNeLzeJvndqAxEZmwKBATUk=";
+  cargoHash = "sha256-sg7J6hQGEevGAMD7DocW1UtgyO36rrEb7kKhQTRKPZ4=";
 
   meta = {
     description = "All-in-one tool to convert decimal/bin/oct/hex and interpret bits as integers";