diff --git a/package-lock.json b/package-lock.json
index c5fc114..2689b76 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1282,9 +1282,9 @@
       "dev": true
     },
     "bignumber.js": {
-      "version": "7.2.1",
-      "resolved": "https://registry.npmjs.org/bignumber.js/-/bignumber.js-7.2.1.tgz",
-      "integrity": "sha512-S4XzBk5sMB+Rcb/LNcpzXr57VRTxgAvaAEDAl1AwRx27j00hT84O6OkteE7u8UB3NuaaygCRrEpqox4uDOrbdQ=="
+      "version": "9.0.0",
+      "resolved": "https://registry.npmjs.org/bignumber.js/-/bignumber.js-9.0.0.tgz",
+      "integrity": "sha512-t/OYhhJ2SD+YGBQcjY8GzzDHEk9f3nerxjtfa6tlMXfe7frs/WozhvCNoGvpM0P3bNf3Gq5ZRMlGr5f3r4/N8A=="
     },
     "bn.js": {
       "version": "4.11.8",
diff --git a/package.json b/package.json
index 439524b..ab5315b 100644
--- a/package.json
+++ b/package.json
@@ -60,7 +60,7 @@
   },
   "dependencies": {
     "axios": "^0.19.2",
-    "bignumber.js": "^7.2.1",
+    "bignumber.js": "^9.0.0",
     "bn.js": "^4.11.8",
     "bs58": "^4.0.1",
     "chai": "^4.1.2",
diff --git a/yarn.lock b/yarn.lock
index 4be8abe..c85f5c0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1294,10 +1294,10 @@ base@^0.11.1:
     mixin-deep "^1.2.0"
     pascalcase "^0.1.1"
 
-bignumber.js@^7.2.1:
-  version "7.2.1"
-  resolved "https://registry.yarnpkg.com/bignumber.js/-/bignumber.js-7.2.1.tgz#80c048759d826800807c4bfd521e50edbba57a5f"
-  integrity sha512-S4XzBk5sMB+Rcb/LNcpzXr57VRTxgAvaAEDAl1AwRx27j00hT84O6OkteE7u8UB3NuaaygCRrEpqox4uDOrbdQ==
+bignumber.js@^9.0.0:
+  version "9.0.0"
+  resolved "https://registry.yarnpkg.com/bignumber.js/-/bignumber.js-9.0.0.tgz#805880f84a329b5eac6e7cb6f8274b6d82bdf075"
+  integrity sha512-t/OYhhJ2SD+YGBQcjY8GzzDHEk9f3nerxjtfa6tlMXfe7frs/WozhvCNoGvpM0P3bNf3Gq5ZRMlGr5f3r4/N8A==
 
 binary-extensions@^1.0.0:
   version "1.12.0"