diff --git a/package.json b/package.json
index 7c3036e..f3f819b 100644
--- a/package.json
+++ b/package.json
@@ -18,6 +18,7 @@
     "@codemirror/view": "^6.9.3",
     "@flok-editor/cm-eval": "^1.0.1",
     "@flok-editor/session": "^1.1.0",
+    "@lezer/highlight": "^1.2.1",
     "@strudel/codemirror": "^1.1.0",
     "@strudel/core": "^1.1.0",
     "@strudel/draw": "^1.1.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 39b640d..2f86d54 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -26,6 +26,9 @@ importers:
       '@flok-editor/session':
         specifier: ^1.1.0
         version: 1.1.0(y-indexeddb@9.0.12(yjs@13.6.21))(y-protocols@1.0.6(yjs@13.6.21))(y-webrtc@10.3.0(bufferutil@4.0.9)(utf-8-validate@6.0.5)(yjs@13.6.21))(y-websocket@1.5.4(bufferutil@4.0.9)(utf-8-validate@6.0.5)(yjs@13.6.21))(yjs@13.6.21)
+      '@lezer/highlight':
+        specifier: ^1.2.1
+        version: 1.2.1
       '@strudel/codemirror':
         specifier: ^1.1.0
         version: 1.1.0(@codemirror/lint@6.8.4)