diff --git a/package.json b/package.json
index 906989c..c52d695 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
     "eslint-config-xo-space": "^0.25.0",
     "eslint-plugin-mocha": "^7.0.1",
     "eslint-plugin-node": "^11.1.0",
-    "eslint-plugin-unicorn": "^20.1.0"
+    "eslint-plugin-unicorn": "^9.1.1"
   },
   "devDependencies": {
     "eslint": "^7.3.1"
diff --git a/yarn.lock b/yarn.lock
index e238d40..a637f3f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -20,10 +20,6 @@
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/@types/color-name/-/color-name-1.1.1.tgz#1c1261bbeaa10a8055bbc5d8ab84b7b2afc846a0"
 
-"@types/normalize-package-data@^2.4.0":
-  version "2.4.0"
-  resolved "https://registry.yarnpkg.com/@types/normalize-package-data/-/normalize-package-data-2.4.0.tgz#e486d0d97396d79beedd0a6e33f4534ff6b4973e"
-
 acorn-jsx@^5.2.0:
   version "5.2.0"
   resolved "https://registry.yarnpkg.com/acorn-jsx/-/acorn-jsx-5.2.0.tgz#4c66069173d6fdd68ed85239fc256226182b2ebe"
@@ -106,10 +102,6 @@ chalk@^4.0.0:
     ansi-styles "^4.1.0"
     supports-color "^7.1.0"
 
-ci-info@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/ci-info/-/ci-info-2.0.0.tgz#67a9e964be31a51e15e5010d58e6f12834002f46"
-
 clean-regexp@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/clean-regexp/-/clean-regexp-1.0.0.tgz#8df7c7aae51fd36874e8f8d05b9180bc11a3fed7"
@@ -178,17 +170,11 @@ enquirer@^2.3.5:
   dependencies:
     ansi-colors "^3.2.1"
 
-error-ex@^1.3.1:
-  version "1.3.2"
-  resolved "https://registry.yarnpkg.com/error-ex/-/error-ex-1.3.2.tgz#b4ac40648107fdcdcfae242f428bea8a14d4f1bf"
-  dependencies:
-    is-arrayish "^0.2.1"
-
 escape-string-regexp@^1.0.5:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
 
-eslint-ast-utils@^1.1.0:
+eslint-ast-utils@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/eslint-ast-utils/-/eslint-ast-utils-1.1.0.tgz#3d58ba557801cfb1c941d68131ee9f8c34bd1586"
   dependencies:
@@ -232,23 +218,22 @@ eslint-plugin-node@^11.1.0:
     resolve "^1.10.1"
     semver "^6.1.0"
 
-eslint-plugin-unicorn@^20.1.0:
-  version "20.1.0"
-  resolved "https://registry.yarnpkg.com/eslint-plugin-unicorn/-/eslint-plugin-unicorn-20.1.0.tgz#a43f60ffc98406d72ec2a5fcc6dad24ba0192bc9"
+eslint-plugin-unicorn@^9.1.1:
+  version "9.1.1"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-unicorn/-/eslint-plugin-unicorn-9.1.1.tgz#1588a0473f9a0e37cfbbcf7552065a0b0a96ce26"
   dependencies:
-    ci-info "^2.0.0"
     clean-regexp "^1.0.0"
-    eslint-ast-utils "^1.1.0"
-    eslint-template-visitor "^2.0.0"
-    eslint-utils "^2.0.0"
-    import-modules "^2.0.0"
-    lodash "^4.17.15"
-    pluralize "^8.0.0"
-    read-pkg-up "^7.0.1"
-    regexp-tree "^0.1.21"
+    eslint-ast-utils "^1.0.0"
+    import-modules "^1.1.0"
+    lodash.camelcase "^4.1.1"
+    lodash.defaultsdeep "^4.6.0"
+    lodash.kebabcase "^4.0.1"
+    lodash.snakecase "^4.0.1"
+    lodash.topairs "^4.3.0"
+    lodash.upperfirst "^4.2.0"
+    regexpp "^2.0.1"
     reserved-words "^0.1.2"
-    safe-regex "^2.1.1"
-    semver "^7.3.2"
+    safe-regex "^2.0.1"
 
 eslint-scope@^5.1.0:
   version "5.1.0"
@@ -257,14 +242,6 @@ eslint-scope@^5.1.0:
     esrecurse "^4.1.0"
     estraverse "^4.1.1"
 
-eslint-template-visitor@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/eslint-template-visitor/-/eslint-template-visitor-2.0.0.tgz#7cb6471ed29a53ab28a1dcbfca38355251c2be06"
-  dependencies:
-    eslint-visitor-keys "^1.1.0"
-    espree "^7.0.0"
-    multimap "^1.1.0"
-
 eslint-utils@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/eslint-utils/-/eslint-utils-2.1.0.tgz#d2de5e03424e707dc10c74068ddedae708741b27"
@@ -316,7 +293,7 @@ eslint@^7.3.1:
     text-table "^0.2.0"
     v8-compile-cache "^2.0.3"
 
-espree@^7.0.0, espree@^7.1.0:
+espree@^7.1.0:
   version "7.1.0"
   resolved "https://registry.yarnpkg.com/espree/-/espree-7.1.0.tgz#a9c7f18a752056735bf1ba14cb1b70adc3a5ce1c"
   dependencies:
@@ -370,13 +347,6 @@ file-entry-cache@^5.0.1:
   dependencies:
     flat-cache "^2.0.1"
 
-find-up@^4.1.0:
-  version "4.1.0"
-  resolved "https://registry.yarnpkg.com/find-up/-/find-up-4.1.0.tgz#97afe7d6cdc0bc5928584b7c8d7b16e8a9aa5d19"
-  dependencies:
-    locate-path "^5.0.0"
-    path-exists "^4.0.0"
-
 flat-cache@^2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/flat-cache/-/flat-cache-2.0.1.tgz#5d296d6f04bda44a4630a301413bdbc2ec085ec0"
@@ -428,10 +398,6 @@ has-flag@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-4.0.0.tgz#944771fd9c81c81265c4d6941860da06bb59479b"
 
-hosted-git-info@^2.1.4:
-  version "2.8.8"
-  resolved "https://registry.yarnpkg.com/hosted-git-info/-/hosted-git-info-2.8.8.tgz#7539bd4bc1e0e0a895815a2e0262420b12858488"
-
 ignore@^4.0.6:
   version "4.0.6"
   resolved "https://registry.yarnpkg.com/ignore/-/ignore-4.0.6.tgz#750e3db5862087b4737ebac8207ffd1ef27b25fc"
@@ -447,9 +413,9 @@ import-fresh@^3.0.0:
     parent-module "^1.0.0"
     resolve-from "^4.0.0"
 
-import-modules@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/import-modules/-/import-modules-2.0.0.tgz#9c1e13b4e7a15682f70a6e3fa29534e4540cfc5d"
+import-modules@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/import-modules/-/import-modules-1.1.0.tgz#748db79c5cc42bb9701efab424f894e72600e9dc"
 
 imurmurhash@^0.1.4:
   version "0.1.4"
@@ -466,10 +432,6 @@ inherits@2:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.3.tgz#633c2c83e3da42a502f52466022480f4208261de"
 
-is-arrayish@^0.2.1:
-  version "0.2.1"
-  resolved "https://registry.yarnpkg.com/is-arrayish/-/is-arrayish-0.2.1.tgz#77c99840527aa8ecb1a8ba697b80645a7a926a9d"
-
 is-extglob@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/is-extglob/-/is-extglob-2.1.1.tgz#a88c02535791f02ed37c76a1b9ea9773c833f8c2"
@@ -499,10 +461,6 @@ js-yaml@^3.13.1:
     argparse "^1.0.7"
     esprima "^4.0.0"
 
-json-parse-better-errors@^1.0.1:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/json-parse-better-errors/-/json-parse-better-errors-1.0.2.tgz#bb867cfb3450e69107c131d1c514bab3dc8bcaa9"
-
 json-schema-traverse@^0.4.1:
   version "0.4.1"
   resolved "https://registry.yarnpkg.com/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz#69f6a87d9513ab8bb8fe63bdb0979c448e684660"
@@ -518,25 +476,39 @@ levn@^0.4.1:
     prelude-ls "^1.2.1"
     type-check "~0.4.0"
 
-lines-and-columns@^1.1.6:
-  version "1.1.6"
-  resolved "https://registry.yarnpkg.com/lines-and-columns/-/lines-and-columns-1.1.6.tgz#1c00c743b433cd0a4e80758f7b64a57440d9ff00"
+lodash.camelcase@^4.1.1:
+  version "4.3.0"
+  resolved "https://registry.yarnpkg.com/lodash.camelcase/-/lodash.camelcase-4.3.0.tgz#b28aa6288a2b9fc651035c7711f65ab6190331a6"
 
-locate-path@^5.0.0:
-  version "5.0.0"
-  resolved "https://registry.yarnpkg.com/locate-path/-/locate-path-5.0.0.tgz#1afba396afd676a6d42504d0a67a3a7eb9f62aa0"
-  dependencies:
-    p-locate "^4.1.0"
+lodash.defaultsdeep@^4.6.0:
+  version "4.6.1"
+  resolved "https://registry.yarnpkg.com/lodash.defaultsdeep/-/lodash.defaultsdeep-4.6.1.tgz#512e9bd721d272d94e3d3a63653fa17516741ca6"
 
 lodash.get@^4.4.2:
   version "4.4.2"
   resolved "https://registry.yarnpkg.com/lodash.get/-/lodash.get-4.4.2.tgz#2d177f652fa31e939b4438d5341499dfa3825e99"
 
+lodash.kebabcase@^4.0.1:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/lodash.kebabcase/-/lodash.kebabcase-4.1.1.tgz#8489b1cb0d29ff88195cceca448ff6d6cc295c36"
+
+lodash.snakecase@^4.0.1:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/lodash.snakecase/-/lodash.snakecase-4.1.1.tgz#39d714a35357147837aefd64b5dcbb16becd8f8d"
+
+lodash.topairs@^4.3.0:
+  version "4.3.0"
+  resolved "https://registry.yarnpkg.com/lodash.topairs/-/lodash.topairs-4.3.0.tgz#3b6deaa37d60fb116713c46c5f17ea190ec48d64"
+
+lodash.upperfirst@^4.2.0:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/lodash.upperfirst/-/lodash.upperfirst-4.3.1.tgz#1365edf431480481ef0d1c68957a5ed99d49f7ce"
+
 lodash.zip@^4.2.0:
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/lodash.zip/-/lodash.zip-4.2.0.tgz#ec6662e4896408ed4ab6c542a3990b72cc080020"
 
-lodash@^4.17.14, lodash@^4.17.15:
+lodash@^4.17.14:
   version "4.17.15"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
 
@@ -560,23 +532,10 @@ ms@^2.1.1:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.2.tgz#d09d1f357b443f493382a8eb3ccd183872ae6009"
 
-multimap@^1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/multimap/-/multimap-1.1.0.tgz#5263febc085a1791c33b59bb3afc6a76a2a10ca8"
-
 natural-compare@^1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/natural-compare/-/natural-compare-1.4.0.tgz#4abebfeed7541f2c27acfb29bdbbd15c8d5ba4f7"
 
-normalize-package-data@^2.5.0:
-  version "2.5.0"
-  resolved "https://registry.yarnpkg.com/normalize-package-data/-/normalize-package-data-2.5.0.tgz#e66db1838b200c1dfc233225d12cb36520e234a8"
-  dependencies:
-    hosted-git-info "^2.1.4"
-    resolve "^1.10.0"
-    semver "2 || 3 || 4 || 5"
-    validate-npm-package-license "^3.0.1"
-
 once@^1.3.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/once/-/once-1.4.0.tgz#583b1aa775961d4b113ac17d9c50baef9dd76bd1"
@@ -594,41 +553,12 @@ optionator@^0.9.1:
     type-check "^0.4.0"
     word-wrap "^1.2.3"
 
-p-limit@^2.2.0:
-  version "2.3.0"
-  resolved "https://registry.yarnpkg.com/p-limit/-/p-limit-2.3.0.tgz#3dd33c647a214fdfffd835933eb086da0dc21db1"
-  dependencies:
-    p-try "^2.0.0"
-
-p-locate@^4.1.0:
-  version "4.1.0"
-  resolved "https://registry.yarnpkg.com/p-locate/-/p-locate-4.1.0.tgz#a3428bb7088b3a60292f66919278b7c297ad4f07"
-  dependencies:
-    p-limit "^2.2.0"
-
-p-try@^2.0.0:
-  version "2.2.0"
-  resolved "https://registry.yarnpkg.com/p-try/-/p-try-2.2.0.tgz#cb2868540e313d61de58fafbe35ce9004d5540e6"
-
 parent-module@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/parent-module/-/parent-module-1.0.1.tgz#691d2709e78c79fae3a156622452d00762caaaa2"
   dependencies:
     callsites "^3.0.0"
 
-parse-json@^5.0.0:
-  version "5.0.0"
-  resolved "https://registry.yarnpkg.com/parse-json/-/parse-json-5.0.0.tgz#73e5114c986d143efa3712d4ea24db9a4266f60f"
-  dependencies:
-    "@babel/code-frame" "^7.0.0"
-    error-ex "^1.3.1"
-    json-parse-better-errors "^1.0.1"
-    lines-and-columns "^1.1.6"
-
-path-exists@^4.0.0:
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/path-exists/-/path-exists-4.0.0.tgz#513bdbe2d3b95d7762e8c1137efa195c6c61b5b3"
-
 path-is-absolute@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/path-is-absolute/-/path-is-absolute-1.0.1.tgz#174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f"
@@ -641,10 +571,6 @@ path-parse@^1.0.6:
   version "1.0.6"
   resolved "https://registry.yarnpkg.com/path-parse/-/path-parse-1.0.6.tgz#d62dbb5679405d72c4737ec58600e9ddcf06d24c"
 
-pluralize@^8.0.0:
-  version "8.0.0"
-  resolved "https://registry.yarnpkg.com/pluralize/-/pluralize-8.0.0.tgz#1a6fa16a38d12a1901e0320fa017051c539ce3b1"
-
 prelude-ls@^1.2.1:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.2.1.tgz#debc6489d7a6e6b0e7611888cec880337d316396"
@@ -661,27 +587,14 @@ ramda@^0.27.0:
   version "0.27.0"
   resolved "https://registry.yarnpkg.com/ramda/-/ramda-0.27.0.tgz#915dc29865c0800bf3f69b8fd6c279898b59de43"
 
-read-pkg-up@^7.0.1:
-  version "7.0.1"
-  resolved "https://registry.yarnpkg.com/read-pkg-up/-/read-pkg-up-7.0.1.tgz#f3a6135758459733ae2b95638056e1854e7ef507"
-  dependencies:
-    find-up "^4.1.0"
-    read-pkg "^5.2.0"
-    type-fest "^0.8.1"
-
-read-pkg@^5.2.0:
-  version "5.2.0"
-  resolved "https://registry.yarnpkg.com/read-pkg/-/read-pkg-5.2.0.tgz#7bf295438ca5a33e56cd30e053b34ee7250c93cc"
-  dependencies:
-    "@types/normalize-package-data" "^2.4.0"
-    normalize-package-data "^2.5.0"
-    parse-json "^5.0.0"
-    type-fest "^0.6.0"
-
-regexp-tree@^0.1.21, regexp-tree@~0.1.1:
+regexp-tree@~0.1.1:
   version "0.1.21"
   resolved "https://registry.yarnpkg.com/regexp-tree/-/regexp-tree-0.1.21.tgz#55e2246b7f7d36f1b461490942fa780299c400d7"
 
+regexpp@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/regexpp/-/regexpp-2.0.1.tgz#8d19d31cf632482b589049f8281f93dbcba4d07f"
+
 regexpp@^3.0.0, regexpp@^3.1.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/regexpp/-/regexpp-3.1.0.tgz#206d0ad0a5648cffbdb8ae46438f3dc51c9f78e2"
@@ -694,7 +607,7 @@ resolve-from@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/resolve-from/-/resolve-from-4.0.0.tgz#4abcd852ad32dd7baabfe9b40e00a36db5f392e6"
 
-resolve@^1.10.0, resolve@^1.10.1:
+resolve@^1.10.1:
   version "1.17.0"
   resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.17.0.tgz#b25941b54968231cc2d1bb76a79cb7f2c0bf8444"
   dependencies:
@@ -706,21 +619,17 @@ rimraf@2.6.3:
   dependencies:
     glob "^7.1.3"
 
-safe-regex@^2.1.1:
+safe-regex@^2.0.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/safe-regex/-/safe-regex-2.1.1.tgz#f7128f00d056e2fe5c11e81a1324dd974aadced2"
   dependencies:
     regexp-tree "~0.1.1"
 
-"semver@2 || 3 || 4 || 5":
-  version "5.7.1"
-  resolved "https://registry.yarnpkg.com/semver/-/semver-5.7.1.tgz#a954f931aeba508d307bbf069eff0c01c96116f7"
-
 semver@^6.1.0:
   version "6.3.0"
   resolved "https://registry.yarnpkg.com/semver/-/semver-6.3.0.tgz#ee0a64c8af5e8ceea67687b133761e1becbd1d3d"
 
-semver@^7.2.1, semver@^7.3.2:
+semver@^7.2.1:
   version "7.3.2"
   resolved "https://registry.yarnpkg.com/semver/-/semver-7.3.2.tgz#604962b052b81ed0786aae84389ffba70ffd3938"
 
@@ -742,28 +651,6 @@ slice-ansi@^2.1.0:
     astral-regex "^1.0.0"
     is-fullwidth-code-point "^2.0.0"
 
-spdx-correct@^3.0.0:
-  version "3.1.1"
-  resolved "https://registry.yarnpkg.com/spdx-correct/-/spdx-correct-3.1.1.tgz#dece81ac9c1e6713e5f7d1b6f17d468fa53d89a9"
-  dependencies:
-    spdx-expression-parse "^3.0.0"
-    spdx-license-ids "^3.0.0"
-
-spdx-exceptions@^2.1.0:
-  version "2.3.0"
-  resolved "https://registry.yarnpkg.com/spdx-exceptions/-/spdx-exceptions-2.3.0.tgz#3f28ce1a77a00372683eade4a433183527a2163d"
-
-spdx-expression-parse@^3.0.0:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/spdx-expression-parse/-/spdx-expression-parse-3.0.1.tgz#cf70f50482eefdc98e3ce0a6833e4a53ceeba679"
-  dependencies:
-    spdx-exceptions "^2.1.0"
-    spdx-license-ids "^3.0.0"
-
-spdx-license-ids@^3.0.0:
-  version "3.0.5"
-  resolved "https://registry.yarnpkg.com/spdx-license-ids/-/spdx-license-ids-3.0.5.tgz#3694b5804567a458d3c8045842a6358632f62654"
-
 sprintf-js@~1.0.2:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/sprintf-js/-/sprintf-js-1.0.3.tgz#04e6926f662895354f3dd015203633b857297e2c"
@@ -823,10 +710,6 @@ type-check@^0.4.0, type-check@~0.4.0:
   dependencies:
     prelude-ls "^1.2.1"
 
-type-fest@^0.6.0:
-  version "0.6.0"
-  resolved "https://registry.yarnpkg.com/type-fest/-/type-fest-0.6.0.tgz#8d2a2370d3df886eb5c90ada1c5bf6188acf838b"
-
 type-fest@^0.8.1:
   version "0.8.1"
   resolved "https://registry.yarnpkg.com/type-fest/-/type-fest-0.8.1.tgz#09e249ebde851d3b1e48d27c105444667f17b83d"
@@ -841,13 +724,6 @@ v8-compile-cache@^2.0.3:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/v8-compile-cache/-/v8-compile-cache-2.1.1.tgz#54bc3cdd43317bca91e35dcaf305b1a7237de745"
 
-validate-npm-package-license@^3.0.1:
-  version "3.0.4"
-  resolved "https://registry.yarnpkg.com/validate-npm-package-license/-/validate-npm-package-license-3.0.4.tgz#fc91f6b9c7ba15c857f4cb2c5defeec39d4f410a"
-  dependencies:
-    spdx-correct "^3.0.0"
-    spdx-expression-parse "^3.0.0"
-
 which@^2.0.1:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/which/-/which-2.0.2.tgz#7c6a8dd0a636a0327e10b59c9286eee93f3f51b1"