diff --git a/packages/identity/package.json b/packages/identity/package.json
index 2cee4a8..d59b1b5 100644
--- a/packages/identity/package.json
+++ b/packages/identity/package.json
@@ -38,7 +38,6 @@
     "@ethersproject/bignumber": "^5.5.0",
     "@ethersproject/random": "^5.5.1",
     "circomlibjs": "0.0.8",
-    "ffjavascript": "0.2.38",
     "js-sha256": "^0.9.0"
   }
 }
diff --git a/packages/identity/src/utils.ts b/packages/identity/src/utils.ts
index 5ae3367..f6f3328 100644
--- a/packages/identity/src/utils.ts
+++ b/packages/identity/src/utils.ts
@@ -1,12 +1,7 @@
 import { BigNumber } from "@ethersproject/bignumber"
 import { randomBytes } from "@ethersproject/random"
-import { ZqField } from "ffjavascript"
 import { sha256 as _sha256 } from "js-sha256"
 
-const SNARK_FIELD_SIZE = BigInt("21888242871839275222246405745257275088548364400416034343698204186575808495617")
-
-export const Fq = new ZqField(SNARK_FIELD_SIZE)
-
 /**
  * Returns an hexadecimal sha256 hash of the message passed as parameter.
  * @param message The string to hash.
diff --git a/packages/identity/yarn.lock b/packages/identity/yarn.lock
index 94d3430..d9d44c4 100644
--- a/packages/identity/yarn.lock
+++ b/packages/identity/yarn.lock
@@ -202,11 +202,6 @@
     "@ethersproject/properties" "^5.5.0"
     "@ethersproject/strings" "^5.5.0"
 
-"@juanelas/base64@^1.0.1":
-  version "1.0.4"
-  resolved "https://registry.yarnpkg.com/@juanelas/base64/-/base64-1.0.4.tgz#e457b9e8e10170f3d2ad685b7a82655bc4397c8b"
-  integrity sha512-KUidDSb+K7Rkoy2uJ/HdCnt4soNRlhNXONU8r8Cgic6Qq3E9BPg4kMSYXchM37WpYvGEGq2NUq/kCegMSLhtIg==
-
 "@rollup/plugin-typescript@^8.3.0":
   version "8.3.0"
   resolved "https://registry.yarnpkg.com/@rollup/plugin-typescript/-/plugin-typescript-8.3.0.tgz#bc1077fa5897b980fc27e376c4e377882c63e68b"
@@ -383,13 +378,6 @@ big-integer@^1.6.42, big-integer@^1.6.48:
   resolved "https://registry.yarnpkg.com/big-integer/-/big-integer-1.6.51.tgz#0df92a5d9880560d3ff2d5fd20245c889d130686"
   integrity sha512-GPEid2Y9QU1Exl1rpO9B2IPJGHPSupF5GnVIP0blYvNOMer2bTvSWs1jGOUg04hTmu67nmLsQ9TBo1puaotBHg==
 
-bigint-conversion@^2.1.12:
-  version "2.2.1"
-  resolved "https://registry.yarnpkg.com/bigint-conversion/-/bigint-conversion-2.2.1.tgz#08c9f17a826943c7e56d4bfa9f0fc7fe8050a940"
-  integrity sha512-9TvqpV+VZ04fPKv4KPLQRk5ZAFhgHX4F7bYQY263/BbJBFzEGbtBeTQV9oNuAGaqj88PXdov1OcSNQtq9K9MPA==
-  dependencies:
-    "@juanelas/base64" "^1.0.1"
-
 bignumber.js@^9.0.0:
   version "9.0.2"
   resolved "https://registry.yarnpkg.com/bignumber.js/-/bignumber.js-9.0.2.tgz#71c6c6bed38de64e24a65ebe16cfcf23ae693673"
@@ -1133,15 +1121,6 @@ fast-json-stable-stringify@^2.0.0:
   resolved "https://registry.yarnpkg.com/fast-json-stable-stringify/-/fast-json-stable-stringify-2.1.0.tgz#874bf69c6f404c2b5d99c481341399fd55892633"
   integrity sha512-lhd/wF+Lk98HZoTCtlVraHtfh5XYijIjalXck7saUtuanSDyLMxnHhSXEDJqHxD7msR8D0uCmqlkwjCV8xvwHw==
 
-ffjavascript@0.2.38:
-  version "0.2.38"
-  resolved "https://registry.yarnpkg.com/ffjavascript/-/ffjavascript-0.2.38.tgz#920832795be1e60a12832da80692b6c86259f3b7"
-  integrity sha512-b4dobcci6QxxUvNYFCHw2ONhXwtgSHCzqxbH6c7ipWMOzyoG+MPRMZgAqnUREYX8UC6zqA7AiRmiIB76nxt2TQ==
-  dependencies:
-    big-integer "^1.6.48"
-    wasmcurves "0.0.14"
-    web-worker "^1.0.0"
-
 ffjavascript@^0.2.38:
   version "0.2.46"
   resolved "https://registry.yarnpkg.com/ffjavascript/-/ffjavascript-0.2.46.tgz#3c7a7c2885e8f44d0535749fe1c6190f39301020"
@@ -2718,14 +2697,6 @@ wasmbuilder@^0.0.11:
   dependencies:
     big-integer "^1.6.48"
 
-wasmcurves@0.0.14:
-  version "0.0.14"
-  resolved "https://registry.yarnpkg.com/wasmcurves/-/wasmcurves-0.0.14.tgz#cbe0f19650d9554937154afdbed66b305bd2a348"
-  integrity sha512-G1iMkxlRaQSdqQ1JrwHcU+awLmwyH6kFKfT8g9obd8MWe+u5oSdFXrODB0zmSI5aGGvJPG+4cAmqCGYv9R+7qg==
-  dependencies:
-    big-integer "^1.6.42"
-    blakejs "^1.1.0"
-
 wasmcurves@0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/wasmcurves/-/wasmcurves-0.1.0.tgz#0bc3f9d465367fcd8243395cb0094a05577e5609"
@@ -2734,7 +2705,7 @@ wasmcurves@0.1.0:
     big-integer "^1.6.42"
     blakejs "^1.1.0"
 
-web-worker@^1.0.0, web-worker@^1.2.0:
+web-worker@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/web-worker/-/web-worker-1.2.0.tgz#5d85a04a7fbc1e7db58f66595d7a3ac7c9c180da"
   integrity sha512-PgF341avzqyx60neE9DD+XS26MMNMoUQRz9NOZwW32nPQrF6p77f1htcnjBSEV8BGMKZ16choqUG4hyI0Hx7mA==