diff --git a/package.json b/package.json
index dbf7786..2e436ee 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
     "etebase": "^0.41.0",
     "fuse.js": "^5.0.9-beta",
     "ical.js": "^1.4.0",
-    "immutable": "^4.0.0-rc.12",
+    "immutable": "^4.3.8",
     "localforage": "^1.9.0",
     "memoizee": "^0.4.14",
     "moment": "^2.27.0",
diff --git a/yarn.lock b/yarn.lock
index ab08955..41c7aec 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5850,10 +5850,10 @@ immer@1.10.0:
   resolved "https://registry.yarnpkg.com/immer/-/immer-1.10.0.tgz#bad67605ba9c810275d91e1c2a47d4582e98286d"
   integrity sha512-O3sR1/opvCDGLEVcvrGTMtLac8GJ5IwZC4puPrLuRj3l7ICKvkmA0vGuU9OW8mV9WIBRnaxp5GJh9IEAaNOoYg==
 
-immutable@^4.0.0-rc.12:
-  version "4.0.0-rc.12"
-  resolved "https://registry.yarnpkg.com/immutable/-/immutable-4.0.0-rc.12.tgz#ca59a7e4c19ae8d9bf74a97bdf0f6e2f2a5d0217"
-  integrity sha512-0M2XxkZLx/mi3t8NVwIm1g8nHoEmM9p9UBl/G9k4+hm0kBgOVdMV/B3CY5dQ8qG8qc80NN4gDV4HQv6FTJ5q7A==
+immutable@^4.3.8:
+  version "4.3.8"
+  resolved "https://registry.yarnpkg.com/immutable/-/immutable-4.3.8.tgz#02d183c7727fb2bb1d5d0380da0d779dce9296a7"
+  integrity sha512-d/Ld9aLbKpNwyl0KiM2CT1WYvkitQ1TSvmRtkcV8FKStiDoA7Slzgjmb/1G2yhKM1p0XeNOieaTbFZmU1d3Xuw==
 
 import-cwd@^2.0.0:
   version "2.1.0"