diff --git a/src/env.d.ts b/src/env.d.ts
index a39b0c4..c2b7299 100644
--- a/src/env.d.ts
+++ b/src/env.d.ts
@@ -4,6 +4,7 @@ interface ImportMetaEnv {
   readonly PUBLIC_ADMIN_URL: string
   readonly PUBLIC_MAXKB_URL: string
   readonly PUBLIC_ICONIFY_URL: string
+  readonly PUBLIC_WS_URL: string
 }
 
 interface ImportMeta {