diff --git a/package-lock.json b/package-lock.json
index 7c55139..10f040c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,7 +10,7 @@
       "license": "ISC",
       "dependencies": {
         "@polkadot/api": "^6.3.2-11",
-        "@types/bn.js": "^4.11.6",
+        "@types/bn.js": "^5.1.0",
         "bignumber.js": "^9.0.1",
         "commander": "^7.2.0",
         "cron": "^1.8.2",
@@ -209,6 +209,14 @@
         "@polkadot/util": "7.4.1"
       }
     },
+    "node_modules/@polkadot/util/node_modules/@types/bn.js": {
+      "version": "4.11.6",
+      "resolved": "https://registry.npmjs.org/@types/bn.js/-/bn.js-4.11.6.tgz",
+      "integrity": "sha512-pqr857jrp2kPuO9uRjZ3PwnJTjoQy+fcdxvBTvHm6dkmEL9q+hDD/2j/0ELOBPtPnS8LjCX0gI9nbl8lVkadpg==",
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
     "node_modules/@polkadot/util/node_modules/camelcase": {
       "version": "6.2.0",
       "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-6.2.0.tgz",
@@ -356,9 +364,9 @@
       }
     },
     "node_modules/@types/bn.js": {
-      "version": "4.11.6",
-      "resolved": "https://registry.npmjs.org/@types/bn.js/-/bn.js-4.11.6.tgz",
-      "integrity": "sha512-pqr857jrp2kPuO9uRjZ3PwnJTjoQy+fcdxvBTvHm6dkmEL9q+hDD/2j/0ELOBPtPnS8LjCX0gI9nbl8lVkadpg==",
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@types/bn.js/-/bn.js-5.1.0.tgz",
+      "integrity": "sha512-QSSVYj7pYFN49kW77o2s9xTCwZ8F2xLbjLLSEVh8D2F4JUhZtPAGOFLTD+ffqksBx/u4cE/KImFjyhqCjn/LIA==",
       "dependencies": {
         "@types/node": "*"
       }
@@ -3373,6 +3381,14 @@
         "ip-regex": "^4.3.0"
       },
       "dependencies": {
+        "@types/bn.js": {
+          "version": "4.11.6",
+          "resolved": "https://registry.npmjs.org/@types/bn.js/-/bn.js-4.11.6.tgz",
+          "integrity": "sha512-pqr857jrp2kPuO9uRjZ3PwnJTjoQy+fcdxvBTvHm6dkmEL9q+hDD/2j/0ELOBPtPnS8LjCX0gI9nbl8lVkadpg==",
+          "requires": {
+            "@types/node": "*"
+          }
+        },
         "camelcase": {
           "version": "6.2.0",
           "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-6.2.0.tgz",
@@ -3503,9 +3519,9 @@
       }
     },
     "@types/bn.js": {
-      "version": "4.11.6",
-      "resolved": "https://registry.npmjs.org/@types/bn.js/-/bn.js-4.11.6.tgz",
-      "integrity": "sha512-pqr857jrp2kPuO9uRjZ3PwnJTjoQy+fcdxvBTvHm6dkmEL9q+hDD/2j/0ELOBPtPnS8LjCX0gI9nbl8lVkadpg==",
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@types/bn.js/-/bn.js-5.1.0.tgz",
+      "integrity": "sha512-QSSVYj7pYFN49kW77o2s9xTCwZ8F2xLbjLLSEVh8D2F4JUhZtPAGOFLTD+ffqksBx/u4cE/KImFjyhqCjn/LIA==",
       "requires": {
         "@types/node": "*"
       }
diff --git a/package.json b/package.json
old mode 100755
new mode 100644
index c55e604..9db41f0
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
   "license": "ISC",
   "dependencies": {
     "@polkadot/api": "^6.3.2-11",
-    "@types/bn.js": "^4.11.6",
+    "@types/bn.js": "^5.1.0",
     "bignumber.js": "^9.0.1",
     "commander": "^7.2.0",
     "cron": "^1.8.2",