diff --git a/solidity/random-beacon/yarn.lock b/solidity/random-beacon/yarn.lock
index cd4ca0d374..bb6adebaf1 100644
--- a/solidity/random-beacon/yarn.lock
+++ b/solidity/random-beacon/yarn.lock
@@ -6391,9 +6391,9 @@ immediate@~3.2.3:
   integrity sha1-0UD6j2FGWb1lQSMwl92qwlzdmRw=
 
 immutable@^4.0.0-rc.12:
-  version "4.0.0-rc.15"
-  resolved "https://registry.yarnpkg.com/immutable/-/immutable-4.0.0-rc.15.tgz#c30056f05eaaf5650fd15230586688fdd15c54bc"
-  integrity sha512-v8+A3sNyaieoP9dHegl3tEYnIZa7vqNiSv0U6D7YddiZi34VjKy4GsIxrRHj2d8+CS3MeiVja5QyNe4JO/aEXA==
+  version "4.3.8"
+  resolved "https://registry.yarnpkg.com/immutable/-/immutable-4.3.8.tgz#02d183c7727fb2bb1d5d0380da0d779dce9296a7"
+  integrity sha512-d/Ld9aLbKpNwyl0KiM2CT1WYvkitQ1TSvmRtkcV8FKStiDoA7Slzgjmb/1G2yhKM1p0XeNOieaTbFZmU1d3Xuw==
 
 import-fresh@^2.0.0:
   version "2.0.0"