diff --git a/flake/pkgs/by-name/stimulus-language-server/0001-use-local-hotwired.patch b/flake/pkgs/by-name/stimulus-language-server/0001-use-local-hotwired.patch
new file mode 100644
index 00000000..f2fcee53
--- /dev/null
+++ b/flake/pkgs/by-name/stimulus-language-server/0001-use-local-hotwired.patch
@@ -0,0 +1,15 @@
+--- a/package.json
++++ b/package.json
+@@ -13,3 +13,3 @@
+   "dependencies": {
+-    "@hotwired/stimulus": "https://github.com/hotwired/dev-builds/archive/refs/tags/@hotwired/stimulus/8cbca6d.tar.gz",
++    "@hotwired/stimulus": "file:./hotwired-stimulus.tar.gz",
+     "dedent": "^1.5.1",
+--- a/yarn.lock
++++ b/yarn.lock
+@@ -27,3 +27,3 @@
+-"@hotwired/stimulus@https://github.com/hotwired/dev-builds/archive/refs/tags/@hotwired/stimulus/8cbca6d.tar.gz":
++"@hotwired/stimulus@file:./hotwired-stimulus.tar.gz":
+   version "3.2.2"
+-  resolved "https://github.com/hotwired/dev-builds/archive/refs/tags/@hotwired/stimulus/8cbca6d.tar.gz#bcca3015d4e1a7e6defad94db626e11dc97e69e5"
++  resolved "file:./hotwired-stimulus.tar.gz"
diff --git a/flake/pkgs/by-name/stimulus-language-server/0002-add-types-node.patch b/flake/pkgs/by-name/stimulus-language-server/0002-add-types-node.patch
new file mode 100644
index 00000000..5b15b8ff
--- /dev/null
+++ b/flake/pkgs/by-name/stimulus-language-server/0002-add-types-node.patch
@@ -0,0 +1,22 @@
+--- a/package.json
++++ b/package.json
+@@ -38,2 +38,3 @@
+   "devDependencies": {
++    "@types/node": "^20.0.0",
+     "@types/estree": "^1.0.5",
+--- a/yarn.lock
++++ b/yarn.lock
+@@ -307,4 +307,13 @@
+ vscode-uri@^3.1.0:
+   version "3.1.0"
+   resolved "https://registry.yarnpkg.com/vscode-uri/-/vscode-uri-3.1.0.tgz#dd09ec5a66a38b5c3fffc774015713496d14e09c"
+   integrity sha512-/BpdSx+yCQGnCvecbyXdxHDkuk55/G3xwnC0GqY4gmQ3j+A+g8kzzgB4Nk/SINjqn6+waqw3EgbVF2QKExkRxQ==
++
++"@types/node@^20.0.0":
++  version "20.19.0"
++  resolved "https://registry.yarnpkg.com/@types/node/-/node-20.19.0.tgz#7006b097b15dfea06695c3bbdba98b268797f65b"
++
++undici-types@~6.19.2:
++  version "6.19.8"
++  resolved "https://registry.yarnpkg.com/undici-types/-/undici-types-6.19.8.tgz#35111c9d1437ab83a7cdc0abae2f26d88eda0a02"
++  integrity sha512-ve2KP6f/JnbPBFyobGHuerC9g1FYGn/F8n1LWTwNxCEzd6IfqTwUQcNXgEtmmQ6DlRrC1hrSrBnCZPokRrDHjw==
diff --git a/flake/pkgs/by-name/stimulus-language-server/package.nix b/flake/pkgs/by-name/stimulus-language-server/package.nix
new file mode 100644
index 00000000..c85a5fcf
--- /dev/null
+++ b/flake/pkgs/by-name/stimulus-language-server/package.nix
@@ -0,0 +1,65 @@
+{
+  lib,
+  stdenvNoCC,
+  fetchFromGitHub,
+  fetchYarnDeps,
+  fetchurl,
+  yarnConfigHook,
+  yarnBuildHook,
+  yarnInstallHook,
+  nodejs,
+  runCommand,
+  patch,
+  nix-update-script,
+}: let
+  version = "1.1.0";
+
+  upstream = fetchFromGitHub {
+    owner = "marcoroth";
+    repo = "stimulus-lsp";
+    tag = "v${version}";
+    hash = "sha256-QAXQKZoFvqhnbAIi9fnJ7pV8fXah0NjwxdrqKB5e5Vw=";
+  };
+
+  # `fetchYarnDeps` doesn't support tarballs so we need to patch this manually
+  stimulusTarball = fetchurl {
+    url = "https://github.com/hotwired/dev-builds/archive/refs/tags/@hotwired/stimulus/8cbca6d.tar.gz";
+    hash = "sha256-2iRIiwXmdcSw7y3CQNIPt6duwZuVvDvdU/FEdqcnzW4=";
+  };
+
+  src = runCommand "stimulus-lsp-server-patched" {nativeBuildInputs = [patch];} ''
+    cp -r ${upstream}/server $out
+    chmod -R +w $out
+    cp '${stimulusTarball}' $out/hotwired-stimulus.tar.gz
+    patch -d $out -p1 < '${./0001-use-local-hotwired.patch}'
+    patch -d $out -p1 < '${./0002-add-types-node.patch}'
+  '';
+in
+  stdenvNoCC.mkDerivation {
+    pname = "stimulus-language-server";
+    inherit version;
+
+    src = src;
+
+    offlineCache = fetchYarnDeps {
+      yarnLock = "${src}/yarn.lock";
+      hash = "sha256-UvojI/Ow602Q+iiwRpSgxm4DV0IJ0sURicdgghmpBsU=";
+    };
+
+    nativeBuildInputs = [
+      yarnConfigHook
+      yarnBuildHook
+      yarnInstallHook
+      nodejs
+    ];
+
+    passthru.updateScript = nix-update-script {};
+
+    meta = {
+      description = "Intelligent Stimulus tooling";
+      homepage = "https://hotwire.io/ecosystem/tooling/stimulus-lsp";
+      changelog = "https://github.com/marcoroth/stimulus-lsp/releases/tag/v${version}";
+      license = lib.licenses.mit;
+      mainProgram = "stimulus-language-server";
+    };
+  }