diff --git a/pkgs/by-name/mo/models-dev/package.nix b/pkgs/by-name/mo/models-dev/package.nix
index e648cf1445dd..d93944c884a2 100644
--- a/pkgs/by-name/mo/models-dev/package.nix
+++ b/pkgs/by-name/mo/models-dev/package.nix
@@ -17,12 +17,12 @@ let
 in
 stdenvNoCC.mkDerivation (finalAttrs: {
   pname = "models-dev";
-  version = "0-unstable-2025-07-29";
+  version = "0-unstable-2025-07-30";
   src = fetchFromGitHub {
     owner = "sst";
     repo = "models.dev";
-    rev = "69e91b1cee1dbd737dc60f5f99ce123a81763cda";
-    hash = "sha256-fr4cgQsW03ukgCxNBtlokAXmqjGh1fFJucWx1dJ7xV0=";
+    rev = "2bc25f1c57a61c0bcb29e4a7ed331be332991c15";
+    hash = "sha256-xCYu8AsTtH9ZVhFZ/sxukj92RSwZGmeQRE3COmiRqI4=";
   };
 
   node_modules = stdenvNoCC.mkDerivation {
@@ -41,6 +41,13 @@ stdenvNoCC.mkDerivation (finalAttrs: {
 
     dontConfigure = true;
 
+    patches = [
+      # In bun 1.2.13 (release-25.05) HTML entrypoints get content hashes
+      # appended → index.html becomes index-pq8vj7za.html in ./dist. So, we
+      # rename the index file back to index.html
+      ./post-build-rename-index-file.patch
+    ];
+
     buildPhase = ''
       runHook preBuild
 
diff --git a/pkgs/by-name/mo/models-dev/post-build-rename-index-file.patch b/pkgs/by-name/mo/models-dev/post-build-rename-index-file.patch
new file mode 100644
index 000000000000..2af79dbc92f9
--- /dev/null
+++ b/pkgs/by-name/mo/models-dev/post-build-rename-index-file.patch
@@ -0,0 +1,18 @@
+diff --git i/packages/web/script/build.ts w/packages/web/script/build.ts
+index 9bdcdb3..e9ce1c9 100755
+--- i/packages/web/script/build.ts
++++ w/packages/web/script/build.ts
+@@ -14,6 +14,13 @@ for await (const file of new Bun.Glob("./public/*").scan()) {
+   await Bun.write(file.replace("./public/", "./dist/"), Bun.file(file));
+ }
+ 
++const distFiles = await fs.readdir("./dist");
++const htmlFile = distFiles.find(file => file.startsWith("index-") && file.endsWith(".html"));
++
++if (htmlFile) {
++  await fs.rename(`./dist/${htmlFile}`, "./dist/index.html");
++}
++
+ let html = await Bun.file("./dist/index.html").text();
+ html = html.replace("<!--static-->", Rendered);
+ await Bun.write("./dist/index.html", html);