diff --git a/package.json b/package.json
index 9e8835a..862e6c4 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,7 @@
     "parcel-bundler": "1.12.4",
     "react": "16.13.1",
     "react-dom": "16.13.1",
-    "ts-jest": "26.2.0",
+    "ts-jest": "26.5.6",
     "typescript": "3.9.7"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 8162f6b..0793979 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1317,30 +1317,21 @@
     source-map "^0.6.1"
     write-file-atomic "^3.0.0"
 
-"@jest/types@^25.5.0":
-  version "25.5.0"
-  resolved "https://registry.yarnpkg.com/@jest/types/-/types-25.5.0.tgz#4d6a4793f7b9599fc3680877b856a97dbccf2a9d"
-  integrity sha512-OXD0RgQ86Tu3MazKo8bnrkDRaDXXMGUqd+kTtLtK1Zb7CRzQcaSRPPPV37SvYTdevXEBVxe0HXylEjs8ibkmCw==
-  dependencies:
-    "@types/istanbul-lib-coverage" "^2.0.0"
-    "@types/istanbul-reports" "^1.1.1"
-    "@types/yargs" "^15.0.0"
-    chalk "^3.0.0"
-
-"@jest/types@^26.1.0":
-  version "26.1.0"
-  resolved "https://registry.yarnpkg.com/@jest/types/-/types-26.1.0.tgz#f8afaaaeeb23b5cad49dd1f7779689941dcb6057"
-  integrity sha512-GXigDDsp6ZlNMhXQDeuy/iYCDsRIHJabWtDzvnn36+aqFfG14JmFV0e/iXxY4SP9vbXSiPNOWdehU5MeqrYHBQ==
+"@jest/types@^26.3.0":
+  version "26.3.0"
+  resolved "https://registry.yarnpkg.com/@jest/types/-/types-26.3.0.tgz#97627bf4bdb72c55346eef98e3b3f7ddc4941f71"
+  integrity sha512-BDPG23U0qDeAvU4f99haztXwdAg3hz4El95LkAM+tHAqqhiVzRpEGHHU8EDxT/AnxOrA65YjLBwDahdJ9pTLJQ==
   dependencies:
     "@types/istanbul-lib-coverage" "^2.0.0"
-    "@types/istanbul-reports" "^1.1.1"
+    "@types/istanbul-reports" "^3.0.0"
+    "@types/node" "*"
     "@types/yargs" "^15.0.0"
     chalk "^4.0.0"
 
-"@jest/types@^26.3.0":
-  version "26.3.0"
-  resolved "https://registry.yarnpkg.com/@jest/types/-/types-26.3.0.tgz#97627bf4bdb72c55346eef98e3b3f7ddc4941f71"
-  integrity sha512-BDPG23U0qDeAvU4f99haztXwdAg3hz4El95LkAM+tHAqqhiVzRpEGHHU8EDxT/AnxOrA65YjLBwDahdJ9pTLJQ==
+"@jest/types@^26.6.2":
+  version "26.6.2"
+  resolved "https://registry.yarnpkg.com/@jest/types/-/types-26.6.2.tgz#bef5a532030e1d88a2f5a6d933f84e97226ed48e"
+  integrity sha512-fC6QCp7Sc5sX6g8Tvbmj4XUTbyrik0akgRy03yjXbQaBWWNWGE7SGtJk98m0N8nzegD/7SggrUlivxo5ax4KWQ==
   dependencies:
     "@types/istanbul-lib-coverage" "^2.0.0"
     "@types/istanbul-reports" "^3.0.0"
@@ -1525,14 +1516,6 @@
   dependencies:
     "@types/istanbul-lib-coverage" "*"
 
-"@types/istanbul-reports@^1.1.1":
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/@types/istanbul-reports/-/istanbul-reports-1.1.1.tgz#7a8cbf6a406f36c8add871625b278eaf0b0d255a"
-  integrity sha512-UpYjBi8xefVChsCoBpKShdxTllC9pwISirfoZsUa2AAdQg/Jd2KQGtSbw+ya7GPo7x/wAPlH6JBhKhAsXUEZNA==
-  dependencies:
-    "@types/istanbul-lib-coverage" "*"
-    "@types/istanbul-lib-report" "*"
-
 "@types/istanbul-reports@^3.0.0":
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/@types/istanbul-reports/-/istanbul-reports-3.0.0.tgz#508b13aa344fa4976234e75dddcc34925737d821"
@@ -1540,14 +1523,6 @@
   dependencies:
     "@types/istanbul-lib-report" "*"
 
-"@types/jest@26.x":
-  version "26.0.9"
-  resolved "https://registry.yarnpkg.com/@types/jest/-/jest-26.0.9.tgz#0543b57da5f0cd949c5f423a00c56c492289c989"
-  integrity sha512-k4qFfJ5AUKrWok5KYXp2EPm89b0P/KZpl7Vg4XuOTVVQEhLDBDBU3iBFrjjdgd8fLw96aAtmnwhXHl63bWeBQQ==
-  dependencies:
-    jest-diff "^25.2.1"
-    pretty-format "^25.2.1"
-
 "@types/jest@27.0.2":
   version "27.0.2"
   resolved "https://registry.yarnpkg.com/@types/jest/-/jest-27.0.2.tgz#ac383c4d4aaddd29bbf2b916d8d105c304a5fcd7"
@@ -2381,14 +2356,6 @@ chalk@^2.0.0, chalk@^2.0.1, chalk@^2.1.0, chalk@^2.3.1, chalk@^2.4.1, chalk@^2.4
     escape-string-regexp "^1.0.5"
     supports-color "^5.3.0"
 
-chalk@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/chalk/-/chalk-3.0.0.tgz#3f73c2bf526591f574cc492c51e2456349f844e4"
-  integrity sha512-4D3B6Wf41KOYRFdszmDqMCGq5VV/uMAB273JILmO+3jAlh8X4qDtdtgCR3fxtbLEMzSx22QdhnDcJvu2u1fVwg==
-  dependencies:
-    ansi-styles "^4.1.0"
-    supports-color "^7.1.0"
-
 chalk@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/chalk/-/chalk-4.0.0.tgz#6e98081ed2d17faab615eb52ac66ec1fe6209e72"
@@ -3136,11 +3103,6 @@ detect-newline@^3.0.0:
   resolved "https://registry.yarnpkg.com/detect-newline/-/detect-newline-3.1.0.tgz#576f5dfc63ae1a192ff192d8ad3af6308991b651"
   integrity sha512-TLz+x/vEXm/Y7P7wn1EJFNLxYpUD4TgMosxY6fAVJUnJMbupHBOncxyWUG9OpTaH9EBD7uFI5LfEgmMOc54DsA==
 
-diff-sequences@^25.2.6:
-  version "25.2.6"
-  resolved "https://registry.yarnpkg.com/diff-sequences/-/diff-sequences-25.2.6.tgz#5f467c00edd35352b7bca46d7927d60e687a76dd"
-  integrity sha512-Hq8o7+6GaZeoFjtpgvRBUknSXNeJiCx7V9Fr94ZMljNiCr9n9L8H8aJqgWOQiDDGdyn29fRNcDdRVJ5fdyihfg==
-
 diff-sequences@^26.3.0:
   version "26.3.0"
   resolved "https://registry.yarnpkg.com/diff-sequences/-/diff-sequences-26.3.0.tgz#62a59b1b29ab7fd27cef2a33ae52abe73042d0a2"
@@ -4659,16 +4621,6 @@ jest-config@^26.4.0:
     micromatch "^4.0.2"
     pretty-format "^26.4.0"
 
-jest-diff@^25.2.1:
-  version "25.5.0"
-  resolved "https://registry.yarnpkg.com/jest-diff/-/jest-diff-25.5.0.tgz#1dd26ed64f96667c068cef026b677dfa01afcfa9"
-  integrity sha512-z1kygetuPiREYdNIumRpAHY6RXiGmp70YHptjdaxTWGmA085W3iCnXNx0DhflK3vwrKmrRWyY1wUpkPMVxMK7A==
-  dependencies:
-    chalk "^3.0.0"
-    diff-sequences "^25.2.6"
-    jest-get-type "^25.2.6"
-    pretty-format "^25.5.0"
-
 jest-diff@^26.4.0:
   version "26.4.0"
   resolved "https://registry.yarnpkg.com/jest-diff/-/jest-diff-26.4.0.tgz#d073a0a11952b5bd9f1ff39bb9ad24304a0c55f7"
@@ -4732,11 +4684,6 @@ jest-environment-node@^26.3.0:
     jest-mock "^26.3.0"
     jest-util "^26.3.0"
 
-jest-get-type@^25.2.6:
-  version "25.2.6"
-  resolved "https://registry.yarnpkg.com/jest-get-type/-/jest-get-type-25.2.6.tgz#0b0a32fab8908b44d508be81681487dbabb8d877"
-  integrity sha512-DxjtyzOHjObRM+sM1knti6or+eOgcGU4xVSb2HNP1TqO4ahsT+rqZg+nyqHWJSvWgKC5cG3QjGFBqxLghiF/Ig==
-
 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#e97dc3c3f53c2b406ca7afaed4493b1d099199e0"
@@ -4952,12 +4899,13 @@ jest-snapshot@^26.4.0:
     pretty-format "^26.4.0"
     semver "^7.3.2"
 
-jest-util@26.x:
-  version "26.1.0"
-  resolved "https://registry.yarnpkg.com/jest-util/-/jest-util-26.1.0.tgz#80e85d4ba820decacf41a691c2042d5276e5d8d8"
-  integrity sha512-rNMOwFQevljfNGvbzNQAxdmXQ+NawW/J72dmddsK0E8vgxXCMtwQ/EH0BiWEIxh0hhMcTsxwAxINt7Lh46Uzbg==
+jest-util@^26.1.0:
+  version "26.6.2"
+  resolved "https://registry.yarnpkg.com/jest-util/-/jest-util-26.6.2.tgz#907535dbe4d5a6cb4c47ac9b926f6af29576cbc1"
+  integrity sha512-MDW0fKfsn0OI7MS7Euz6h8HNDXVQ0gaM9uW6RjfDmd1DAFcaxX9OqIakHIqhbnmF08Cf2DLDG+ulq8YQQ0Lp0Q==
   dependencies:
-    "@jest/types" "^26.1.0"
+    "@jest/types" "^26.6.2"
+    "@types/node" "*"
     chalk "^4.0.0"
     graceful-fs "^4.2.4"
     is-ci "^2.0.0"
@@ -5240,7 +5188,7 @@ lodash.isequal@^4.5.0:
   resolved "https://registry.yarnpkg.com/lodash.isequal/-/lodash.isequal-4.5.0.tgz#415c4478f2bcc30120c22ce10ed3226f7d3e18e0"
   integrity sha1-QVxEePK8wwEgwizhDtMib30+GOA=
 
-lodash.memoize@4.x, lodash.memoize@^4.1.2:
+lodash.memoize@^4.1.2:
   version "4.1.2"
   resolved "https://registry.yarnpkg.com/lodash.memoize/-/lodash.memoize-4.1.2.tgz#bcc6c49a42a2840ed997f323eada5ecd182e0bfe"
   integrity sha1-vMbEmkKihA7Zl/Mj6tpezRguC/4=
@@ -5255,6 +5203,11 @@ lodash.uniq@^4.5.0:
   resolved "https://registry.yarnpkg.com/lodash.uniq/-/lodash.uniq-4.5.0.tgz#d0225373aeb652adc1bc82e4945339a842754773"
   integrity sha1-0CJTc662Uq3BvILklFM5qEJ1R3M=
 
+lodash@4.x:
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
+  integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
+
 lodash@^4.15.0, lodash@^4.17.11, lodash@^4.17.13, lodash@^4.17.15, lodash@^4.17.4:
   version "4.17.19"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.19.tgz#e48ddedbe30b3321783c5b4301fbd353bc1e4a4b"
@@ -6572,16 +6525,6 @@ prelude-ls@~1.1.2:
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"
   integrity sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=
 
-pretty-format@^25.2.1, pretty-format@^25.5.0:
-  version "25.5.0"
-  resolved "https://registry.yarnpkg.com/pretty-format/-/pretty-format-25.5.0.tgz#7873c1d774f682c34b8d48b6743a2bf2ac55791a"
-  integrity sha512-kbo/kq2LQ/A/is0PQwsEHM7Ca6//bGPPvU6UnsdDRSKTWxT/ru/xb88v4BJf6a69H+uTytOEsTusT9ksd/1iWQ==
-  dependencies:
-    "@jest/types" "^25.5.0"
-    ansi-regex "^5.0.0"
-    ansi-styles "^4.0.0"
-    react-is "^16.12.0"
-
 pretty-format@^26.4.0:
   version "26.4.0"
   resolved "https://registry.yarnpkg.com/pretty-format/-/pretty-format-26.4.0.tgz#c08073f531429e9e5024049446f42ecc9f933a3b"
@@ -7970,22 +7913,21 @@ trim-right@^1.0.1:
   resolved "https://registry.yarnpkg.com/trim-right/-/trim-right-1.0.1.tgz#cb2e1203067e0c8de1f614094b9fe45704ea6003"
   integrity sha1-yy4SAwZ+DI3h9hQJS5/kVwTqYAM=
 
-ts-jest@26.2.0:
-  version "26.2.0"
-  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-26.2.0.tgz#7ec22faceb05ee1467fdb5265d1b33c27441f163"
-  integrity sha512-9+y2qwzXdAImgLSYLXAb/Rhq9+K4rbt0417b8ai987V60g2uoNWBBmMkYgutI7D8Zhu+IbCSHbBtrHxB9d7xyA==
+ts-jest@26.5.6:
+  version "26.5.6"
+  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-26.5.6.tgz#c32e0746425274e1dfe333f43cd3c800e014ec35"
+  integrity sha512-rua+rCP8DxpA8b4DQD/6X2HQS8Zy/xzViVYfEs2OQu68tkCuKLV0Md8pmX55+W24uRIyAsf/BajRfxOs+R2MKA==
   dependencies:
-    "@types/jest" "26.x"
     bs-logger "0.x"
     buffer-from "1.x"
     fast-json-stable-stringify "2.x"
-    jest-util "26.x"
+    jest-util "^26.1.0"
     json5 "2.x"
-    lodash.memoize "4.x"
+    lodash "4.x"
     make-error "1.x"
     mkdirp "1.x"
     semver "7.x"
-    yargs-parser "18.x"
+    yargs-parser "20.x"
 
 tty-browserify@0.0.0:
   version "0.0.0"
@@ -8440,7 +8382,12 @@ yaml@^1.7.2:
   dependencies:
     "@babel/runtime" "^7.6.3"
 
-yargs-parser@18.x, yargs-parser@^18.1.1:
+yargs-parser@20.x:
+  version "20.2.9"
+  resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-20.2.9.tgz#2eb7dc3b0289718fc295f362753845c41a0c94ee"
+  integrity sha512-y11nGElTIV+CT3Zv9t7VKl+Q3hTQoT9a1Qzezhhl6Rp21gJ/IVTW7Z3y9EWXhuUBC2Shnf+DX0antecpAwSP8w==
+
+yargs-parser@^18.1.1:
   version "18.1.3"
   resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-18.1.3.tgz#be68c4975c6b2abf469236b0c870362fab09a7b0"
   integrity sha512-o50j0JeToy/4K6OZcaQmW6lyXXKhq7csREXcDwk2omFPJEwUNOVtJKvmDr9EI1fAJZUyZcRF7kxGBWmRXudrCQ==