diff --git a/package.json b/package.json
index bf2a503..25d2302 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
     "eslint": "^7.26.0",
     "gh-pages": "^3.1.0",
     "jest": "^26.6.3",
-    "jest-environment-node": "^26.6.2",
+    "jest-environment-node": "^27.3.1",
     "near-cli": "^2.0.0",
     "near-sdk-as": "3.2.3",
     "nodemon": "^2.0.7",
diff --git a/yarn.lock b/yarn.lock
index b7f6b8b..f9fc909 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1367,6 +1367,16 @@
     "@types/node" "*"
     jest-mock "^26.6.2"
 
+"@jest/environment@^27.3.1":
+  version "27.3.1"
+  resolved "https://registry.yarnpkg.com/@jest/environment/-/environment-27.3.1.tgz#2182defbce8d385fd51c5e7c7050f510bd4c86b1"
+  integrity sha512-BCKCj4mOVLme6Tanoyc9k0ultp3pnmuyHw73UHRPeeZxirsU/7E3HC4le/VDb/SMzE1JcPnto+XBKFOcoiJzVw==
+  dependencies:
+    "@jest/fake-timers" "^27.3.1"
+    "@jest/types" "^27.2.5"
+    "@types/node" "*"
+    jest-mock "^27.3.0"
+
 "@jest/fake-timers@^26.6.2":
   version "26.6.2"
   resolved "https://registry.yarnpkg.com/@jest/fake-timers/-/fake-timers-26.6.2.tgz"
@@ -1378,6 +1388,18 @@
     jest-mock "^26.6.2"
     jest-util "^26.6.2"
 
+"@jest/fake-timers@^27.3.1":
+  version "27.3.1"
+  resolved "https://registry.yarnpkg.com/@jest/fake-timers/-/fake-timers-27.3.1.tgz#1fad860ee9b13034762cdb94266e95609dfce641"
+  integrity sha512-M3ZFgwwlqJtWZ+QkBG5NmC23A9w+A6ZxNsO5nJxJsKYt4yguBd3i8TpjQz5NfCX91nEve1KqD9RA2Q+Q1uWqoA==
+  dependencies:
+    "@jest/types" "^27.2.5"
+    "@sinonjs/fake-timers" "^8.0.1"
+    "@types/node" "*"
+    jest-message-util "^27.3.1"
+    jest-mock "^27.3.0"
+    jest-util "^27.3.1"
+
 "@jest/globals@^26.6.2":
   version "26.6.2"
   resolved "https://registry.yarnpkg.com/@jest/globals/-/globals-26.6.2.tgz"
@@ -1474,6 +1496,17 @@
     "@types/yargs" "^15.0.0"
     chalk "^4.0.0"
 
+"@jest/types@^27.2.5":
+  version "27.2.5"
+  resolved "https://registry.yarnpkg.com/@jest/types/-/types-27.2.5.tgz#420765c052605e75686982d24b061b4cbba22132"
+  integrity sha512-nmuM4VuDtCZcY+eTpw+0nvstwReMsjPoj7ZR80/BbixulhLaiX+fbv8oeLW8WZlJMcsGQsTmMKT/iTZu1Uy/lQ==
+  dependencies:
+    "@types/istanbul-lib-coverage" "^2.0.0"
+    "@types/istanbul-reports" "^3.0.0"
+    "@types/node" "*"
+    "@types/yargs" "^16.0.0"
+    chalk "^4.0.0"
+
 "@ledgerhq/devices@^5.15.0":
   version "5.15.0"
   resolved "https://registry.yarnpkg.com/@ledgerhq/devices/-/devices-5.15.0.tgz"
@@ -1602,6 +1635,13 @@
   dependencies:
     "@sinonjs/commons" "^1.7.0"
 
+"@sinonjs/fake-timers@^8.0.1":
+  version "8.1.0"
+  resolved "https://registry.yarnpkg.com/@sinonjs/fake-timers/-/fake-timers-8.1.0.tgz#3fdc2b6cb58935b21bfb8d1625eb1300484316e7"
+  integrity sha512-OAPJUAtgeINhh/TAlUID4QTs53Njm7xzddaVlEs/SXwgtiD1tW22zAB/W1wdqfrpmikgaWQ9Fw6Ws+hsiRm5Vg==
+  dependencies:
+    "@sinonjs/commons" "^1.7.0"
+
 "@szmarczak/http-timer@^1.1.2":
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/@szmarczak/http-timer/-/http-timer-1.1.2.tgz"
@@ -1713,6 +1753,13 @@
   dependencies:
     "@types/yargs-parser" "*"
 
+"@types/yargs@^16.0.0":
+  version "16.0.4"
+  resolved "https://registry.yarnpkg.com/@types/yargs/-/yargs-16.0.4.tgz#26aad98dd2c2a38e421086ea9ad42b9e51642977"
+  integrity sha512-T8Yc9wt/5LbJyCaLiHPReJa0kApcIgJ7Bn735GjItUfh08Z1pJvu8QZqb9s+mMvKV6WUQRV7K2R46YbjMXTTJw==
+  dependencies:
+    "@types/yargs-parser" "*"
+
 "@typescript-eslint/eslint-plugin@^4.22.1":
   version "4.22.1"
   resolved "https://registry.yarnpkg.com/@typescript-eslint/eslint-plugin/-/eslint-plugin-4.22.1.tgz#6bcdbaa4548553ab861b4e5f34936ead1349a543"
@@ -1883,6 +1930,11 @@ ansi-regex@^5.0.0:
   version "5.0.0"
   resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-5.0.0.tgz"
 
+ansi-regex@^5.0.1:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-5.0.1.tgz#082cb2c89c9fe8659a311a53bd6a4dc5301db304"
+  integrity sha512-quJQXlTSUGL2LH9SUXo8VwsY4soanhgo6LNSm84E1LBcE8s3O0wpdiRzyR9z/ZZJMlMWv37qOOb9pdJlMUEKFQ==
+
 ansi-styles@^2.2.1:
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-2.2.1.tgz"
@@ -1900,6 +1952,11 @@ ansi-styles@^4.0.0, ansi-styles@^4.1.0:
     "@types/color-name" "^1.1.1"
     color-convert "^2.0.1"
 
+ansi-styles@^5.0.0:
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-5.2.0.tgz#07449690ad45777d1924ac2abb2fc8895dba836b"
+  integrity sha512-Cxwpt2SfTzTtXcfOlzGEee8O+c+MmUgGrNiBcXnuWxuFJHe6a5Hz7qwhwe5OgaSYI0IJvkLqWX1ASG+cJOkEiA==
+
 ansi-to-html@^0.6.4:
   version "0.6.14"
   resolved "https://registry.yarnpkg.com/ansi-to-html/-/ansi-to-html-0.6.14.tgz"
@@ -2663,6 +2720,11 @@ ci-info@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/ci-info/-/ci-info-2.0.0.tgz"
 
+ci-info@^3.2.0:
+  version "3.3.0"
+  resolved "https://registry.yarnpkg.com/ci-info/-/ci-info-3.3.0.tgz#b4ed1fb6818dea4803a55c623041f9165d2066b2"
+  integrity sha512-riT/3vI5YpVH6/qomlDnJow6TBee2PBKSEpx3O32EGPYbWGIRsIlGRms3Sm74wYE1JMo8RnO04Hb12+v1J5ICw==
+
 cipher-base@^1.0.0, cipher-base@^1.0.1, cipher-base@^1.0.3:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/cipher-base/-/cipher-base-1.0.4.tgz"
@@ -4983,6 +5045,18 @@ jest-environment-node@^26.0.0, jest-environment-node@^26.6.2:
     jest-mock "^26.6.2"
     jest-util "^26.6.2"
 
+jest-environment-node@^27.3.1:
+  version "27.3.1"
+  resolved "https://registry.yarnpkg.com/jest-environment-node/-/jest-environment-node-27.3.1.tgz#af7d0eed04edafb740311b303f3fe7c8c27014bb"
+  integrity sha512-T89F/FgkE8waqrTSA7/ydMkcc52uYPgZZ6q8OaZgyiZkJb5QNNCF6oPZjH9IfPFfcc9uBWh1574N0kY0pSvTXw==
+  dependencies:
+    "@jest/environment" "^27.3.1"
+    "@jest/fake-timers" "^27.3.1"
+    "@jest/types" "^27.2.5"
+    "@types/node" "*"
+    jest-mock "^27.3.0"
+    jest-util "^27.3.1"
+
 jest-get-type@^26.3.0:
   version "26.3.0"
   resolved "https://registry.yarnpkg.com/jest-get-type/-/jest-get-type-26.3.0.tgz"
@@ -5060,6 +5134,21 @@ jest-message-util@^26.6.2:
     slash "^3.0.0"
     stack-utils "^2.0.2"
 
+jest-message-util@^27.3.1:
+  version "27.3.1"
+  resolved "https://registry.yarnpkg.com/jest-message-util/-/jest-message-util-27.3.1.tgz#f7c25688ad3410ab10bcb862bcfe3152345c6436"
+  integrity sha512-bh3JEmxsTZ/9rTm0jQrPElbY2+y48Rw2t47uMfByNyUVR+OfPh4anuyKsGqsNkXk/TI4JbLRZx+7p7Hdt6q1yg==
+  dependencies:
+    "@babel/code-frame" "^7.12.13"
+    "@jest/types" "^27.2.5"
+    "@types/stack-utils" "^2.0.0"
+    chalk "^4.0.0"
+    graceful-fs "^4.2.4"
+    micromatch "^4.0.4"
+    pretty-format "^27.3.1"
+    slash "^3.0.0"
+    stack-utils "^2.0.3"
+
 jest-mock@^26.6.2:
   version "26.6.2"
   resolved "https://registry.yarnpkg.com/jest-mock/-/jest-mock-26.6.2.tgz"
@@ -5067,6 +5156,14 @@ jest-mock@^26.6.2:
     "@jest/types" "^26.6.2"
     "@types/node" "*"
 
+jest-mock@^27.3.0:
+  version "27.3.0"
+  resolved "https://registry.yarnpkg.com/jest-mock/-/jest-mock-27.3.0.tgz#ddf0ec3cc3e68c8ccd489bef4d1f525571a1b867"
+  integrity sha512-ziZiLk0elZOQjD08bLkegBzv5hCABu/c8Ytx45nJKkysQwGaonvmTxwjLqEA4qGdasq9o2I8/HtdGMNnVsMTGw==
+  dependencies:
+    "@jest/types" "^27.2.5"
+    "@types/node" "*"
+
 jest-pnp-resolver@^1.2.2:
   version "1.2.2"
   resolved "https://registry.yarnpkg.com/jest-pnp-resolver/-/jest-pnp-resolver-1.2.2.tgz"
@@ -5192,6 +5289,18 @@ jest-util@^26.6.2:
     is-ci "^2.0.0"
     micromatch "^4.0.2"
 
+jest-util@^27.3.1:
+  version "27.3.1"
+  resolved "https://registry.yarnpkg.com/jest-util/-/jest-util-27.3.1.tgz#a58cdc7b6c8a560caac9ed6bdfc4e4ff23f80429"
+  integrity sha512-8fg+ifEH3GDryLQf/eKZck1DEs2YuVPBCMOaHQxVVLmQwl/CDhWzrvChTX4efLZxGrw+AA0mSXv78cyytBt/uw==
+  dependencies:
+    "@jest/types" "^27.2.5"
+    "@types/node" "*"
+    chalk "^4.0.0"
+    ci-info "^3.2.0"
+    graceful-fs "^4.2.4"
+    picomatch "^2.2.3"
+
 jest-validate@^26.6.2:
   version "26.6.2"
   resolved "https://registry.yarnpkg.com/jest-validate/-/jest-validate-26.6.2.tgz"
@@ -5616,6 +5725,14 @@ micromatch@^4.0.2:
     braces "^3.0.1"
     picomatch "^2.0.5"
 
+micromatch@^4.0.4:
+  version "4.0.4"
+  resolved "https://registry.yarnpkg.com/micromatch/-/micromatch-4.0.4.tgz#896d519dfe9db25fce94ceb7a500919bf881ebf9"
+  integrity sha512-pRmzw/XUcwXGpD9aI9q/0XOwLNygjETJ8y0ao0wdqprrzDa4YnxLcz7fQRZr8voh8V10kGhABbNcHVk5wHgWwg==
+  dependencies:
+    braces "^3.0.1"
+    picomatch "^2.2.3"
+
 miller-rabin@^4.0.0:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/miller-rabin/-/miller-rabin-4.0.1.tgz"
@@ -6459,6 +6576,11 @@ picomatch@^2.0.4, picomatch@^2.0.5, picomatch@^2.2.1:
   version "2.2.2"
   resolved "https://registry.yarnpkg.com/picomatch/-/picomatch-2.2.2.tgz"
 
+picomatch@^2.2.3:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/picomatch/-/picomatch-2.3.0.tgz#f1f061de8f6a4bf022892e2d128234fb98302972"
+  integrity sha512-lY1Q/PiJGC2zOv/z391WOTD+Z02bCgsFfvxoXXf6h7kv9o+WmsmzYqrAwY63sNgOxE4xEdq0WyUnXfKeBrSvYw==
+
 pify@^2.0.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/pify/-/pify-2.3.0.tgz"
@@ -6857,6 +6979,16 @@ pretty-format@^26.6.2:
     ansi-styles "^4.0.0"
     react-is "^17.0.1"
 
+pretty-format@^27.3.1:
+  version "27.3.1"
+  resolved "https://registry.yarnpkg.com/pretty-format/-/pretty-format-27.3.1.tgz#7e9486365ccdd4a502061fa761d3ab9ca1b78df5"
+  integrity sha512-DR/c+pvFc52nLimLROYjnXPtolawm+uWDxr4FjuLDLUn+ktWnSN851KoHwHzzqq6rfCOjkzN8FLgDrSub6UDuA==
+  dependencies:
+    "@jest/types" "^27.2.5"
+    ansi-regex "^5.0.1"
+    ansi-styles "^5.0.0"
+    react-is "^17.0.1"
+
 private@^0.1.8:
   version "0.1.8"
   resolved "https://registry.yarnpkg.com/private/-/private-0.1.8.tgz"
@@ -7676,6 +7808,13 @@ stack-utils@^2.0.2:
   dependencies:
     escape-string-regexp "^2.0.0"
 
+stack-utils@^2.0.3:
+  version "2.0.5"
+  resolved "https://registry.yarnpkg.com/stack-utils/-/stack-utils-2.0.5.tgz#d25265fca995154659dbbfba3b49254778d2fdd5"
+  integrity sha512-xrQcmYhOsn/1kX+Vraq+7j4oE2j/6BFscZ0etmYg81xuM8Gq0022Pxb8+IqgOFUIaxHs0KaSb7T1+OegiNrNFA==
+  dependencies:
+    escape-string-regexp "^2.0.0"
+
 static-eval@^2.0.0:
   version "2.0.5"
   resolved "https://registry.yarnpkg.com/static-eval/-/static-eval-2.0.5.tgz"