diff --git a/pkgs/by-name/md/mdbook-d2/package.nix b/pkgs/by-name/md/mdbook-d2/package.nix
index f1a888e02180..8337e202b47e 100644
--- a/pkgs/by-name/md/mdbook-d2/package.nix
+++ b/pkgs/by-name/md/mdbook-d2/package.nix
@@ -6,17 +6,17 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "mdbook-d2";
-  version = "0.3.3";
+  version = "0.3.4";
 
   src = fetchFromGitHub {
     owner = "danieleades";
     repo = "mdbook-d2";
     rev = "v${version}";
-    hash = "sha256-PsPCbuSK8JlNZOqFbxCK0f8h+7EC4tNFtjBfJqiPi7Q=";
+    hash = "sha256-iVPB4SAzspw8gZHzEQVFRbFjyPCkxrvXvhMszopzslE=";
   };
 
   useFetchCargoVendor = true;
-  cargoHash = "sha256-emfO7D7JU/fQYdnaK7eWR8tCPx3ffvU/pTutSURZMBQ=";
+  cargoHash = "sha256-9D/osDyFwIhgv3scnnpsdN6S4qCPWuAU9tajENyWaXo=";
   doCheck = false;
 
   meta = with lib; {