diff --git a/package.json b/package.json
index e49d5de4..c8060241 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
   "devDependencies": {
     "@nju33/eslint-config": "0.0.26",
     "@nju33/prettier": "0.0.26",
-    "@types/jest": "24.9.1",
+    "@types/jest": "27.0.1",
     "coveralls": "3.1.1",
     "eslint": "5.16.0",
     "gh-pages": "2.2.0",
diff --git a/packages/react-dayo/package.json b/packages/react-dayo/package.json
index ca4e2e39..e582be97 100644
--- a/packages/react-dayo/package.json
+++ b/packages/react-dayo/package.json
@@ -34,7 +34,7 @@
   },
   "devDependencies": {
     "@testing-library/react": "8.0.9",
-    "@types/jest": "24.9.1",
+    "@types/jest": "27.0.1",
     "@types/nanoevents": "1.0.0",
     "@types/nanoid": "2.1.0",
     "@types/react": "16.14.12",
diff --git a/yarn.lock b/yarn.lock
index 889b55ad..6e9ba5dd 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1043,6 +1043,17 @@
     "@types/istanbul-reports" "^1.1.1"
     "@types/yargs" "^13.0.0"
 
+"@jest/types@^27.0.6":
+  version "27.0.6"
+  resolved "https://registry.yarnpkg.com/@jest/types/-/types-27.0.6.tgz#9a992bc517e0c49f035938b8549719c2de40706b"
+  integrity sha512-aSquT1qa9Pik26JK5/3rvnYb4bGtm1VFNesHKmNTwmPIgOrixvhL2ghIvFRNEpzy3gU+rUgjIF/KodbkFAl++g==
+  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"
+
 "@lerna/add@3.21.0":
   version "3.21.0"
   resolved "https://registry.yarnpkg.com/@lerna/add/-/add-3.21.0.tgz#27007bde71cc7b0a2969ab3c2f0ae41578b4577b"
@@ -1943,6 +1954,13 @@
     "@types/istanbul-lib-coverage" "*"
     "@types/istanbul-lib-report" "*"
 
+"@types/istanbul-reports@^3.0.0":
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/@types/istanbul-reports/-/istanbul-reports-3.0.1.tgz#9153fe98bba2bd565a63add9436d6f0d7f8468ff"
+  integrity sha512-c3mAZEuK0lvBp8tmuL74XRKn1+y2dcwOUpH7x4WrF6gk1GIgiluDRgMYQtw2OFcBvAJWlt6ASU3tSqxp0Uu0Aw==
+  dependencies:
+    "@types/istanbul-lib-report" "*"
+
 "@types/jest-diff@*":
   version "20.0.1"
   resolved "https://registry.yarnpkg.com/@types/jest-diff/-/jest-diff-20.0.1.tgz#35cc15b9c4f30a18ef21852e255fdb02f6d59b89"
@@ -1955,12 +1973,13 @@
   dependencies:
     "@types/jest-diff" "*"
 
-"@types/jest@24.9.1":
-  version "24.9.1"
-  resolved "https://registry.yarnpkg.com/@types/jest/-/jest-24.9.1.tgz#02baf9573c78f1b9974a5f36778b366aa77bd534"
-  integrity sha512-Fb38HkXSVA4L8fGKEZ6le5bB8r6MRWlOCZbVuWZcmOMSCd2wCYOwN1ibj8daIoV9naq7aaOZjrLCoCMptKU/4Q==
+"@types/jest@27.0.1":
+  version "27.0.1"
+  resolved "https://registry.yarnpkg.com/@types/jest/-/jest-27.0.1.tgz#fafcc997da0135865311bb1215ba16dba6bdf4ca"
+  integrity sha512-HTLpVXHrY69556ozYkcq47TtQJXpcWAWfkoqz+ZGz2JnmZhzlRjprCIyFnetSy8gpDWwTTGBcRVv1J1I1vBrHw==
   dependencies:
-    jest-diff "^24.3.0"
+    jest-diff "^27.0.0"
+    pretty-format "^27.0.0"
 
 "@types/json5@^0.0.29":
   version "0.0.29"
@@ -2151,6 +2170,13 @@
   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@^1.6.0":
   version "1.9.0"
   resolved "https://registry.yarnpkg.com/@typescript-eslint/eslint-plugin/-/eslint-plugin-1.9.0.tgz#29d73006811bf2563b88891ceeff1c5ea9c8d9c6"
@@ -2507,6 +2533,11 @@ ansi-regex@^4.0.0, ansi-regex@^4.1.0:
   resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-4.1.0.tgz#8b9f8f08cf1acb843756a839ca8c7e3168c51997"
   integrity sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==
 
+ansi-regex@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-5.0.0.tgz#388539f55179bf39339c81af30a654d69f87cb75"
+  integrity sha512-bY6fj56OUQ0hU1KjFNDQuJFezqKdrAyFdIevADiqrWHwSlbmBNMHp5ak2f40Pm8JTFyM2mqxkG6ngkHO11f/lg==
+
 ansi-styles@^3.2.0, ansi-styles@^3.2.1:
   version "3.2.1"
   resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-3.2.1.tgz#41fbb20243e50b12be0f04b8dedbf07520ce841d"
@@ -2514,6 +2545,18 @@ ansi-styles@^3.2.0, ansi-styles@^3.2.1:
   dependencies:
     color-convert "^1.9.0"
 
+ansi-styles@^4.1.0:
+  version "4.3.0"
+  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-4.3.0.tgz#edd803628ae71c04c85ae7a0906edad34b648937"
+  integrity sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg==
+  dependencies:
+    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==
+
 any-promise@^1.0.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/any-promise/-/any-promise-1.3.0.tgz#abc6afeedcea52e809cdc0376aed3ce39635d17f"
@@ -3250,6 +3293,14 @@ chalk@2.4.2, chalk@^2.0.0, chalk@^2.0.1, chalk@^2.1.0, chalk@^2.3.0, chalk@^2.3.
     escape-string-regexp "^1.0.5"
     supports-color "^5.3.0"
 
+chalk@^4.0.0:
+  version "4.1.2"
+  resolved "https://registry.yarnpkg.com/chalk/-/chalk-4.1.2.tgz#aac4e2b7734a740867aeb16bf02aad556a1e7a01"
+  integrity sha512-oKnbhFyRIXpUuez8iBMmyEa4nbj4IOQyuhc/wy9kY7/WVPcwIO9VA668Pu8RkO7+0G76SLROeyw9CpQ061i4mA==
+  dependencies:
+    ansi-styles "^4.1.0"
+    supports-color "^7.1.0"
+
 chardet@^0.7.0:
   version "0.7.0"
   resolved "https://registry.yarnpkg.com/chardet/-/chardet-0.7.0.tgz#90094849f0937f2eedc2425d0d28a9e5f0cbad9e"
@@ -3369,11 +3420,23 @@ color-convert@^1.9.0:
   dependencies:
     color-name "1.1.3"
 
+color-convert@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-2.0.1.tgz#72d3a68d598c9bdb3af2ad1e84f21d896abd4de3"
+  integrity sha512-RRECPsj7iu/xb5oKYcsFHSppFNnsj/52OVTRKb4zP5onXwVF3zVmmToNcOfGC+CRDpfK/U584fMg38ZHCaElKQ==
+  dependencies:
+    color-name "~1.1.4"
+
 color-name@1.1.3:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.3.tgz#a7d0558bd89c42f795dd42328f740831ca53bc25"
   integrity sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=
 
+color-name@~1.1.4:
+  version "1.1.4"
+  resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.4.tgz#c2a09a87acbde69543de6f63fa3995c826c536a2"
+  integrity sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==
+
 colors@1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/colors/-/colors-1.1.2.tgz#168a4701756b6a7f51a12ce0c97bfa28c084ed63"
@@ -3985,6 +4048,11 @@ diff-sequences@^24.9.0:
   resolved "https://registry.yarnpkg.com/diff-sequences/-/diff-sequences-24.9.0.tgz#5715d6244e2aa65f48bba0bc972db0b0b11e95b5"
   integrity sha512-Dj6Wk3tWyTE+Fo1rW8v0Xhwk80um6yFYKbuAxc9c3EZxIHFDYwbi34Uk42u1CdnIiVorvt4RmlSDjIPyzGC2ew==
 
+diff-sequences@^27.0.6:
+  version "27.0.6"
+  resolved "https://registry.yarnpkg.com/diff-sequences/-/diff-sequences-27.0.6.tgz#3305cb2e55a033924054695cc66019fd7f8e5723"
+  integrity sha512-ag6wfpBFyNXZ0p8pcuIDS//D8H062ZQJ3fzYxjpmeKjnz8W4pekL3AI8VohmyZmsWW2PWaHgjsmqR6L13101VQ==
+
 diffie-hellman@^5.0.0:
   version "5.0.3"
   resolved "https://registry.yarnpkg.com/diffie-hellman/-/diffie-hellman-5.0.3.tgz#40e8ee98f55a2149607146921c63e1ae5f3d2875"
@@ -5028,6 +5096,11 @@ has-flag@^3.0.0:
   resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-3.0.0.tgz#b5d454dc2199ae225699f3467e5a07f3b955bafd"
   integrity sha1-tdRU3CGZriJWmfNGfloH87lVuv0=
 
+has-flag@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-4.0.0.tgz#944771fd9c81c81265c4d6941860da06bb59479b"
+  integrity sha512-EykJT/Q1KjTWctppgIAgfSO0tKVuZUjhgMr17kqTumMl6Afv3EISleU7qZUzoXDFTAHTDC4NOoG/ZxU3EvlMPQ==
+
 has-symbols@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/has-symbols/-/has-symbols-1.0.0.tgz#ba1a8f1af2a0fc39650f5c850367704122063b44"
@@ -5739,7 +5812,7 @@ jest-diff@^24.0.0, jest-diff@^24.8.0:
     jest-get-type "^24.8.0"
     pretty-format "^24.8.0"
 
-jest-diff@^24.3.0, jest-diff@^24.9.0:
+jest-diff@^24.9.0:
   version "24.9.0"
   resolved "https://registry.yarnpkg.com/jest-diff/-/jest-diff-24.9.0.tgz#931b7d0d5778a1baf7452cb816e325e3724055da"
   integrity sha512-qMfrTs8AdJE2iqrTp0hzh7kTd2PQWrsFyj9tORoKmu32xjPjeE4NyjVRDz8ybYwqS2ik8N4hsIpiVTyFeo2lBQ==
@@ -5749,6 +5822,16 @@ jest-diff@^24.3.0, jest-diff@^24.9.0:
     jest-get-type "^24.9.0"
     pretty-format "^24.9.0"
 
+jest-diff@^27.0.0:
+  version "27.0.6"
+  resolved "https://registry.yarnpkg.com/jest-diff/-/jest-diff-27.0.6.tgz#4a7a19ee6f04ad70e0e3388f35829394a44c7b5e"
+  integrity sha512-Z1mqgkTCSYaFgwTlP/NUiRzdqgxmmhzHY1Tq17zL94morOHfHu3K4bgSgl+CR4GLhpV8VxkuOYuIWnQ9LnFqmg==
+  dependencies:
+    chalk "^4.0.0"
+    diff-sequences "^27.0.6"
+    jest-get-type "^27.0.6"
+    pretty-format "^27.0.6"
+
 jest-docblock@^24.3.0:
   version "24.3.0"
   resolved "https://registry.yarnpkg.com/jest-docblock/-/jest-docblock-24.3.0.tgz#b9c32dac70f72e4464520d2ba4aec02ab14db5dd"
@@ -5814,6 +5897,11 @@ jest-get-type@^24.9.0:
   resolved "https://registry.yarnpkg.com/jest-get-type/-/jest-get-type-24.9.0.tgz#1684a0c8a50f2e4901b6644ae861f579eed2ef0e"
   integrity sha512-lUseMzAley4LhIcpSP9Jf+fTrQ4a1yHQwLNeeVa2cEmbCGeoZAtYPOIv8JaxLD/sUpKxetKGP+gsHl8f8TSj8Q==
 
+jest-get-type@^27.0.6:
+  version "27.0.6"
+  resolved "https://registry.yarnpkg.com/jest-get-type/-/jest-get-type-27.0.6.tgz#0eb5c7f755854279ce9b68a9f1a4122f69047cfe"
+  integrity sha512-XTkK5exIeUbbveehcSR8w0bhH+c0yloW/Wpl+9vZrjzztCPWrxhHwkIFpZzCt71oRBsgxmuUfxEqOYoZI2macg==
+
 jest-haste-map@^24.9.0:
   version "24.9.0"
   resolved "https://registry.yarnpkg.com/jest-haste-map/-/jest-haste-map-24.9.0.tgz#b38a5d64274934e21fa417ae9a9fbeb77ceaac7d"
@@ -7820,6 +7908,16 @@ pretty-format@^24.9.0:
     ansi-styles "^3.2.0"
     react-is "^16.8.4"
 
+pretty-format@^27.0.0, pretty-format@^27.0.6:
+  version "27.0.6"
+  resolved "https://registry.yarnpkg.com/pretty-format/-/pretty-format-27.0.6.tgz#ab770c47b2c6f893a21aefc57b75da63ef49a11f"
+  integrity sha512-8tGD7gBIENgzqA+UBzObyWqQ5B778VIFZA/S66cclyd5YkFLYs2Js7gxDKf0MXtTc9zcS7t1xhdfcElJ3YIvkQ==
+  dependencies:
+    "@jest/types" "^27.0.6"
+    ansi-regex "^5.0.0"
+    ansi-styles "^5.0.0"
+    react-is "^17.0.1"
+
 private@^0.1.6:
   version "0.1.8"
   resolved "https://registry.yarnpkg.com/private/-/private-0.1.8.tgz#2381edb3689f7a53d653190060fcf822d2f368ff"
@@ -8075,6 +8173,11 @@ react-is@^16.7.0:
   resolved "https://registry.yarnpkg.com/react-is/-/react-is-16.12.0.tgz#2cc0fe0fba742d97fd527c42a13bec4eeb06241c"
   integrity sha512-rPCkf/mWBtKc97aLL9/txD8DZdemK0vkA3JMLShjlJB3Pj3s+lpf1KaBzMfQrAmhMQB0n1cU/SUGgKKBCe837Q==
 
+react-is@^17.0.1:
+  version "17.0.2"
+  resolved "https://registry.yarnpkg.com/react-is/-/react-is-17.0.2.tgz#e691d4a8e9c789365655539ab372762b0efb54f0"
+  integrity sha512-w2GsyukL62IJnlaff/nRegPQR94C/XXamvMWmSHRJ4y7Ts/4ocGRmTHvOs8PSE6pB3dWOrD/nueuU5sduBsQ4w==
+
 react-ssr-prepass@1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/react-ssr-prepass/-/react-ssr-prepass-1.0.2.tgz#f411414cbc043a90254cddcef0793b2aaf14b086"
@@ -9270,6 +9373,13 @@ supports-color@^6.1.0:
   dependencies:
     has-flag "^3.0.0"
 
+supports-color@^7.1.0:
+  version "7.2.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-7.2.0.tgz#1b7dcdcb32b8138801b3e478ba6a51caa89648da"
+  integrity sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw==
+  dependencies:
+    has-flag "^4.0.0"
+
 symbol-tree@^3.2.2:
   version "3.2.2"
   resolved "https://registry.yarnpkg.com/symbol-tree/-/symbol-tree-3.2.2.tgz#ae27db38f660a7ae2e1c3b7d1bc290819b8519e6"