diff --git a/package.json b/package.json
index 6542fb5..9f50f51 100644
--- a/package.json
+++ b/package.json
@@ -59,7 +59,7 @@
     "@rollup/plugin-typescript": "^11.1.2",
     "@types/node-fetch": "^2.6.4",
     "@well-known-components/test-helpers": "^1.5.3",
-    "bignumber.js": "^9.1.1",
+    "bignumber.js": "^9.1.2",
     "fp-future": "^1.0.1",
     "ganache": "^7.9.0",
     "isomorphic-fetch": "^3.0.0",
diff --git a/yarn.lock b/yarn.lock
index b8b9be8..3a7bbe3 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1403,10 +1403,10 @@ big-integer@^1.6.44:
   resolved "https://registry.yarnpkg.com/big-integer/-/big-integer-1.6.51.tgz#0df92a5d9880560d3ff2d5fd20245c889d130686"
   integrity sha512-GPEid2Y9QU1Exl1rpO9B2IPJGHPSupF5GnVIP0blYvNOMer2bTvSWs1jGOUg04hTmu67nmLsQ9TBo1puaotBHg==
 
-bignumber.js@^9.1.1:
-  version "9.1.1"
-  resolved "https://registry.yarnpkg.com/bignumber.js/-/bignumber.js-9.1.1.tgz#c4df7dc496bd849d4c9464344c1aa74228b4dac6"
-  integrity sha512-pHm4LsMJ6lzgNGVfZHjMoO8sdoRhOzOH4MLmY65Jg70bpxCKu5iOHNJyfF6OyvYw7t8Fpf35RuzUyqnQsj8Vig==
+bignumber.js@^9.1.2:
+  version "9.1.2"
+  resolved "https://registry.yarnpkg.com/bignumber.js/-/bignumber.js-9.1.2.tgz#b7c4242259c008903b13707983b5f4bbd31eda0c"
+  integrity sha512-2/mKyZH9K85bzOEfhXDBFZTGd1CTs+5IHpeFQo9luiBG7hghdC851Pj2WAhb6E3R6b9tZj/XKhbg4fum+Kepug==
 
 bn.js@^4.11.9:
   version "4.12.0"