diff --git a/yarn.lock b/yarn.lock
index 147f828..4308f27 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -330,8 +330,8 @@ bluebird@^3.0.5, bluebird@^3.1.1:
   resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.4.6.tgz#01da8d821d87813d158967e743d5fe6c62cf8c0f"
 
 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 "4.12.3"
+  resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.12.3.tgz#2cc2c679188eb35b006f2d0d4710bed8437a769e"
 
 boom@2.x.x:
   version "2.10.1"