diff --git a/package.json b/package.json
index ba19cc4..e93d886 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,7 @@
     "clipboard": "^2.0.11",
     "dayjs": "^1.11.13",
     "gm-crypto": "^0.1.8",
+    "immutable": "^4.3.7",
     "js-base64": "^3.7.2",
     "jsencrypt": "^3.3.2",
     "lodash": "^4.17.21",