diff --git a/js/_meta/package.json b/js/_meta/package.json
index 303351b..abf396e 100644
--- a/js/_meta/package.json
+++ b/js/_meta/package.json
@@ -24,5 +24,6 @@
   "types": "lib/index.d.ts",
   "dependencies": {
     "jupyterlab-slideshow": "workspace:^"
-  }
+  },
+  "packageManager": "yarn@3.5.0"
 }
diff --git a/js/jupyterlab-slideshow/package.json b/js/jupyterlab-slideshow/package.json
index a8dd4fa..c5463d0 100644
--- a/js/jupyterlab-slideshow/package.json
+++ b/js/jupyterlab-slideshow/package.json
@@ -56,5 +56,6 @@
         "bundled": true
       }
     }
-  }
+  },
+  "packageManager": "yarn@3.5.0"
 }
diff --git a/package.json b/package.json
index 7bfd011..f451c8c 100644
--- a/package.json
+++ b/package.json
@@ -198,5 +198,6 @@
       "color-function-notation": null,
       "selector-class-pattern": null
     }
-  }
+  },
+  "packageManager": "yarn@3.5.0"
 }