diff --git a/package-lock.json b/package-lock.json
index a1590e8..e3c9211 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -32,7 +32,6 @@
           "resolved": "https://registry.npmjs.org/web3/-/web3-0.20.7.tgz",
           "integrity": "sha512-VU6/DSUX93d1fCzBz7WP/SGCQizO1rKZi4Px9j/3yRyfssHyFcZamMw2/sj4E8TlfMXONvZLoforR8B4bRoyTQ==",
           "requires": {
-            "bignumber.js": "git+https://github.com/frozeman/bignumber.js-nolookahead.git#57692b3ecfc98bbdd6b3a516cb2353652ea49934",
             "crypto-js": "^3.1.4",
             "utf8": "^2.1.1",
             "xhr2-cookies": "^1.1.0",
@@ -41,7 +40,7 @@
           "dependencies": {
             "bignumber.js": {
               "version": "git+https://github.com/frozeman/bignumber.js-nolookahead.git#57692b3ecfc98bbdd6b3a516cb2353652ea49934",
-              "from": "git+https://github.com/frozeman/bignumber.js-nolookahead.git"
+              "from": "git+https://github.com/frozeman/bignumber.js-nolookahead.git#57692b3ecfc98bbdd6b3a516cb2353652ea49934"
             }
           }
         }
@@ -1540,13 +1539,12 @@
       "resolved": "https://registry.npmjs.org/eth-sig-util/-/eth-sig-util-1.4.2.tgz",
       "integrity": "sha1-jZWCAsftuq6Dlwf7pvCf8ydgYhA=",
       "requires": {
-        "ethereumjs-abi": "git+https://github.com/ethereumjs/ethereumjs-abi.git#00ba8463a7f7a67fcad737ff9c2ebd95643427f7",
         "ethereumjs-util": "^5.1.1"
       },
       "dependencies": {
         "ethereumjs-abi": {
           "version": "git+https://github.com/ethereumjs/ethereumjs-abi.git#00ba8463a7f7a67fcad737ff9c2ebd95643427f7",
-          "from": "git+https://github.com/ethereumjs/ethereumjs-abi.git",
+          "from": "git+https://github.com/ethereumjs/ethereumjs-abi.git#00ba8463a7f7a67fcad737ff9c2ebd95643427f7",
           "requires": {
             "bn.js": "^4.10.0",
             "ethereumjs-util": "^5.0.0"
@@ -4373,7 +4371,6 @@
       "resolved": "http://registry.npmjs.org/web3/-/web3-0.20.6.tgz",
       "integrity": "sha1-PpcwauAk+yThCj11yIQwJWIhUSA=",
       "requires": {
-        "bignumber.js": "git+https://github.com/frozeman/bignumber.js-nolookahead.git#57692b3ecfc98bbdd6b3a516cb2353652ea49934",
         "crypto-js": "^3.1.4",
         "utf8": "^2.1.1",
         "xhr2": "*",
@@ -4382,7 +4379,7 @@
       "dependencies": {
         "bignumber.js": {
           "version": "git+https://github.com/frozeman/bignumber.js-nolookahead.git#57692b3ecfc98bbdd6b3a516cb2353652ea49934",
-          "from": "git+https://github.com/frozeman/bignumber.js-nolookahead.git"
+          "from": "git+https://github.com/frozeman/bignumber.js-nolookahead.git#57692b3ecfc98bbdd6b3a516cb2353652ea49934"
         }
       }
     },
diff --git a/package.json b/package.json
index d84de37..6bf1481 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
   "homepage": "https://github.com/oceanprotocol/squid-js#readme",
   "dependencies": {
     "@oceanprotocol/keeper-contracts": "^0.2.0",
-    "bn.js": "^4.11.8",
+    "bignumber.js": "^7.2.1",
     "truffle-contract": "^3.0.6",
     "web3": "0.20.6"
   },
diff --git a/src/ocean.ts b/src/ocean.ts
index 84e3065..a1012e9 100644
--- a/src/ocean.ts
+++ b/src/ocean.ts
@@ -1,4 +1,4 @@
-import BigNumber = require("bn.js");
+import BigNumber from "bignumber.js";
 import OceanAuth from "./keeper/auth";
 import OceanMarket from "./keeper/market";
 import OceanToken from "./keeper/token";