diff --git a/package.json b/package.json
index c224c09a..9fd05651 100644
--- a/package.json
+++ b/package.json
@@ -603,6 +603,7 @@
     "vscode-languageclient": "8.0.2",
     "polka": "^1.0.0-next.22",
     "sirv": "^2.0.2",
+    "ws": "^8.14.2",
     "n-readlines": "^1.0.0"
   },
   "devDependencies": {
diff --git a/src/lsp/superbol_free_lib/vscode_extension.ml b/src/lsp/superbol_free_lib/vscode_extension.ml
index 7fc8e621..fda81d0d 100644
--- a/src/lsp/superbol_free_lib/vscode_extension.ml
+++ b/src/lsp/superbol_free_lib/vscode_extension.ml
@@ -70,6 +70,7 @@ let package =
       "vscode-languageclient", "8.0.2";
       "polka", "^1.0.0-next.22";
       "sirv", "^2.0.2";
+      "ws", "^8.14.2";
 
       (* for the debug extension: *)
       "n-readlines", "^1.0.0";