diff --git a/yarn.lock b/yarn.lock
index 280918b..bb2f2fb 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1121,8 +1121,8 @@ bluebird@^3.4.7, bluebird@^3.5.0:
   resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.5.0.tgz#791420d7f551eea2897453a8a77653f96606d67c"
 
 bn.js@^4.0.0, bn.js@^4.1.0, bn.js@^4.1.1, bn.js@^4.4.0:
-  version "4.11.6"
-  resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.11.6.tgz#53344adb14617a13f6e8dd2ce28905d1c0ba3215"
+  version "4.12.4"
+  resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.12.4.tgz#72627bb262f2385c51d313cd5e9596ca7cda77d6"
 
 boom@2.x.x:
   version "2.10.1"