diff --git a/packages/aeternity/package.json b/packages/aeternity/package.json
index 514e24a..234cb3b 100644
--- a/packages/aeternity/package.json
+++ b/packages/aeternity/package.json
@@ -31,7 +31,7 @@
         "@jelly-swap/utils": "^0.1.53",
         "axios": "^0.19.0",
         "bignumber.js": "^9.0.0",
-        "json-bigint": "^0.3.0",
+        "json-bigint": "^1.0.0",
         "memoizee": "^0.4.14",
         "websocket": "^1.0.31"
     },
diff --git a/packages/aex9/package.json b/packages/aex9/package.json
index e6beb95..b325d6b 100644
--- a/packages/aex9/package.json
+++ b/packages/aex9/package.json
@@ -31,7 +31,7 @@
         "@jelly-swap/utils": "^0.1.53",
         "axios": "^0.19.0",
         "bignumber.js": "^9.0.0",
-        "json-bigint": "^0.3.0",
+        "json-bigint": "^1.0.0",
         "memoizee": "^0.4.14",
         "websocket": "^1.0.31"
     },
diff --git a/yarn.lock b/yarn.lock
index 1ac61e0..c172366 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2399,7 +2399,7 @@ before-after-hook@^2.0.0:
   resolved "https://registry.yarnpkg.com/before-after-hook/-/before-after-hook-2.1.0.tgz#b6c03487f44e24200dd30ca5e6a1979c5d2fb635"
   integrity sha512-IWIbu7pMqyw3EAJHzzHbWa85b6oud/yfKYg5rqB5hNE8CeMi3nX+2C2sj0HswfblST86hpVEOAb9x34NZd6P7A==
 
-bignumber.js@^7.0.0, bignumber.js@^7.2.1:
+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==
@@ -5836,12 +5836,12 @@ jsesc@^2.5.1:
   resolved "https://registry.yarnpkg.com/jsesc/-/jsesc-2.5.2.tgz#80564d2e483dacf6e8ef209650a67df3f0c283a4"
   integrity sha512-OYu7XEzjkCQ3C5Ps3QIZsQfNpqoJyZZA99wd9aWd05NCtC5pWOkShK2mkL6HXQR6/Cy2lbNdPlZBpuQHXE63gA==
 
-json-bigint@^0.3.0:
-  version "0.3.0"
-  resolved "https://registry.yarnpkg.com/json-bigint/-/json-bigint-0.3.0.tgz#0ccd912c4b8270d05f056fbd13814b53d3825b1e"
-  integrity sha1-DM2RLEuCcNBfBW+9E4FLU9OCWx4=
+json-bigint@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/json-bigint/-/json-bigint-1.0.0.tgz#ae547823ac0cad8398667f8cd9ef4730f5b01ff1"
+  integrity sha512-SiPv/8VpZuWbvLSMtTDU8hEfrZWg/mH/nV/b4o0CYbSxu1UIQPLdwKOCIyLQX+VIPO5vrLX3i8qtqFyhdPSUSQ==
   dependencies:
-    bignumber.js "^7.0.0"
+    bignumber.js "^9.0.0"
 
 json-buffer@3.0.0:
   version "3.0.0"