diff --git a/package.json b/package.json
index c6ccba8..622e97c 100644
--- a/package.json
+++ b/package.json
@@ -56,6 +56,7 @@
         "watch:src": "tsc -w --sourceMap",
         "watch:labextension": "jupyter labextension watch ."
     },
+    "packageManager": "yarn@3.5.0",
     "dependencies": {
         "@jupyterlab/application": "^4.0.0",
         "@jupyterlab/coreutils": "^6.0.0",