diff --git a/package.json b/package.json
index 425c9894..82c616fe 100644
--- a/package.json
+++ b/package.json
@@ -27,14 +27,14 @@
     },
     "dependencies": {
         "@augmint/contracts": "1.1.2",
-        "bn.js": "5.1.3",
+        "bn.js": "5.2.1",
         "dotenv": "8.2.0",
         "ulog": "2.0.0-beta.7",
         "web3": "1.0.0-beta.36"
     },
     "devDependencies": {
         "@typechain/web3-v1": "1.0.0",
-        "@types/bn.js": "4.11.6",
+        "@types/bn.js": "5.1.1",
         "@types/node": "^10.14.5",
         "chai": "4.2.0",
         "chai-as-promised": "7.1.1",
diff --git a/yarn.lock b/yarn.lock
index 9e3478d8..b4686c73 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -123,10 +123,10 @@
   resolved "https://registry.yarnpkg.com/@typechain/web3-v1/-/web3-v1-1.0.0.tgz#842f925e45bdfb0d28e08c0e355f1c8efed7ea91"
   integrity sha512-MM8PmsblePaxy5BCYEuPtR4ajigPf504VRQzZgFYqs6KuFnJxbOjF8jNYT12P6UvUX7us75Wc78QdbvOHbb4hA==
 
-"@types/bn.js@4.11.6":
-  version "4.11.6"
-  resolved "https://registry.yarnpkg.com/@types/bn.js/-/bn.js-4.11.6.tgz#c306c70d9358aaea33cd4eda092a742b9505967c"
-  integrity sha512-pqr857jrp2kPuO9uRjZ3PwnJTjoQy+fcdxvBTvHm6dkmEL9q+hDD/2j/0ELOBPtPnS8LjCX0gI9nbl8lVkadpg==
+"@types/bn.js@5.1.1":
+  version "5.1.1"
+  resolved "https://registry.yarnpkg.com/@types/bn.js/-/bn.js-5.1.1.tgz#b51e1b55920a4ca26e9285ff79936bbdec910682"
+  integrity sha512-qNrYbZqMx0uJAfKnKclPh+dTwK33KfLHYqtyODwd5HnXOjnkhc4qgn3BrK6RWyGZm5+sIFE7Q7Vz6QQtJB7w7g==
   dependencies:
     "@types/node" "*"
 
@@ -421,10 +421,10 @@ bn.js@4.11.6:
   resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.11.6.tgz#53344adb14617a13f6e8dd2ce28905d1c0ba3215"
   integrity sha1-UzRK2xRhehP26N0s4okF0cC6MhU=
 
-bn.js@5.1.3, bn.js@^5.1.1:
-  version "5.1.3"
-  resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-5.1.3.tgz#beca005408f642ebebea80b042b4d18d2ac0ee6b"
-  integrity sha512-GkTiFpjFtUzU9CbMeJ5iazkCzGL3jrhzerzZIuqLABjbwRaFt33I9tUdSNryIptM+RxDet6OKm2WnLXzW51KsQ==
+bn.js@5.2.1, bn.js@^5.1.1:
+  version "5.2.1"
+  resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-5.2.1.tgz#0bc527a6a0d18d0aa8d5b0538ce4a77dccfa7b70"
+  integrity sha512-eXRvHzWyYPBuB4NBy0cmYQjGitUrtqwbvlzP3G6VFnNRbsZQIxQ10PbKKHt8gZ/HW/D/747aDl+QkDqg3KQLMQ==
 
 bn.js@^4.0.0, bn.js@^4.1.0, bn.js@^4.11.6, bn.js@^4.4.0:
   version "4.11.9"