diff --git a/pkgs/tools/admin/synapse-admin/yarn.lock b/pkgs/tools/admin/synapse-admin/yarn.lock
index 75c079da96caf..cbd133f4a130f 100644
--- a/pkgs/tools/admin/synapse-admin/yarn.lock
+++ b/pkgs/tools/admin/synapse-admin/yarn.lock
@@ -6325,9 +6325,9 @@ immer@^9.0.7:
   integrity sha512-2eB/sswms9AEUSkOm4SbV5Y7Vmt/bKRwByd52jfLkW4OLYeaTP3EEiJ9agqU0O/tq6Dk62Zfj+TJSqfm1rLVGQ==
 
 "immutable@^3.8.1 || ^4.0.0":
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/immutable/-/immutable-4.0.0.tgz#b86f78de6adef3608395efb269a91462797e2c23"
-  integrity sha512-zIE9hX70qew5qTUjSS7wi1iwj/l7+m54KWU247nhM3v806UdGj1yDndXj+IOYxxtW9zyLI+xqFNZjTuDaLUqFw==
+  version "4.3.8"
+  resolved "https://registry.yarnpkg.com/immutable/-/immutable-4.3.8.tgz#02d183c7727fb2bb1d5d0380da0d779dce9296a7"
+  integrity sha512-d/Ld9aLbKpNwyl0KiM2CT1WYvkitQ1TSvmRtkcV8FKStiDoA7Slzgjmb/1G2yhKM1p0XeNOieaTbFZmU1d3Xuw==
 
 import-fresh@^3.0.0, import-fresh@^3.1.0, import-fresh@^3.2.1:
   version "3.3.0"