diff --git a/packages/websocket-client/package.json b/packages/websocket-client/package.json
index 30f950dbf51..69d2541b827 100644
--- a/packages/websocket-client/package.json
+++ b/packages/websocket-client/package.json
@@ -52,5 +52,8 @@
     },
     "peerDependencies": {
         "tslib": "^2.6.2"
+    },
+    "devDependencies": {
+        "tsx": "^4.16.3"
     }
 }
diff --git a/yarn.lock b/yarn.lock
index c6fd3f103ca..138f0265f67 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -12960,6 +12960,7 @@ __metadata:
   resolution: "@trezor/websocket-client@workspace:packages/websocket-client"
   dependencies:
     "@trezor/utils": "workspace:*"
+    tsx: "npm:^4.16.3"
     ws: "npm:^8.18.0"
   peerDependencies:
     tslib: ^2.6.2