diff --git a/cspell.json b/cspell.json
index 67866f185..4916f67fe 100644
--- a/cspell.json
+++ b/cspell.json
@@ -181,6 +181,7 @@
         "l’objectif",
         "lcov",
         "libdef",
+        "lilconfig",
         "linearize",
         "linebreak",
         "linebreaks",
@@ -342,8 +343,8 @@
         "typecasted",
         "typecheck",
         "typeof",
-        "Uchino",
         "Ubie",
+        "Uchino",
         "Umidbek",
         "unaries",
         "uncook",
diff --git a/docs/api.md b/docs/api.md
index 080e5eb15..bbcebfac1 100644
--- a/docs/api.md
+++ b/docs/api.md
@@ -66,7 +66,7 @@ If `options.editorconfig` is `true` and an [`.editorconfig` file](https://editor
 
 The promise will be rejected if there was an error parsing the configuration file.
 
-The search starts at `process.cwd()`, or at `filePath` if provided. Please see the [cosmiconfig docs](https://github.com/davidtheclark/cosmiconfig#explorersearch) for details on how the resolving works.
+The search starts at `process.cwd()`, or at `filePath` if provided. Please see the [lilconfig docs](https://github.com/antonk52/lilconfig) for details on how the resolving works.
 
 ```js
 const configFile = await prettier.resolveConfigFile(filePath);
diff --git a/docs/configuration.md b/docs/configuration.md
index dbf4435df..fc81084c2 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -3,7 +3,7 @@ id: configuration
 title: Configuration File
 ---
 
-Prettier uses [cosmiconfig](https://github.com/davidtheclark/cosmiconfig) for configuration file support. This means you can configure Prettier via (in order of precedence):
+Prettier uses [lilconfig](https://github.com/antonk52/lilconfig) for configuration file support. This means you can configure Prettier via (in order of precedence):
 
 - A `"prettier"` key in your `package.json` file.
 - A `.prettierrc` file written in JSON or YAML.
diff --git a/package.json b/package.json
index c9852f68e..e4c0c21b9 100644
--- a/package.json
+++ b/package.json
@@ -49,7 +49,6 @@
     "ci-info": "3.8.0",
     "cjk-regex": "3.0.0",
     "collapse-white-space": "1.0.6",
-    "cosmiconfig": "8.2.0",
     "css-units-list": "2.0.1",
     "dashify": "2.0.0",
     "diff": "5.1.0",
@@ -74,8 +73,10 @@
     "ignore": "5.2.4",
     "import-meta-resolve": "3.0.0",
     "jest-docblock": "29.6.3",
+    "js-yaml": "4.1.0",
     "json5": "2.2.3",
     "leven": "4.0.0",
+    "lilconfig": "2.1.0",
     "lines-and-columns": "2.0.3",
     "linguist-languages": "7.26.1",
     "mem": "9.0.2",
@@ -84,6 +85,7 @@
     "minimist": "1.2.8",
     "n-readlines": "1.0.1",
     "outdent": "0.8.0",
+    "parse-json": "7.0.0",
     "please-upgrade-node": "3.2.0",
     "postcss": "8.4.28",
     "postcss-less": "6.0.0",
diff --git a/scripts/build/config.js b/scripts/build/config.js
index 85946cf8f..a3f3f5072 100644
--- a/scripts/build/config.js
+++ b/scripts/build/config.js
@@ -554,6 +554,10 @@ const nodejsFiles = [
           paths: [require.resolve("@babel/code-frame")],
         }),
       },
+      {
+        module: getPackageFile("js-yaml/dist/js-yaml.mjs"),
+        path: getPackageFile("js-yaml/lib/loader.js"),
+      },
     ],
     addDefaultExport: true,
   },
@@ -582,19 +586,10 @@ const nodejsFiles = [
     input: "src/common/mockable.js",
     outputBaseName: "internal/internal",
     replaceModule: [
-      // cosmiconfig@6 -> import-fresh can't find parentModule, since module is bundled
       {
-        module: require.resolve("parent-module"),
-        path: path.join(dirname, "./shims/parent-module.cjs"),
-      },
-      // `@babel/code-frame` and `@babel/highlight` use compatible `chalk`, but they installed separately
-      {
-        module: require.resolve("chalk", {
-          paths: [require.resolve("@babel/highlight")],
-        }),
-        path: require.resolve("chalk", {
-          paths: [require.resolve("@babel/code-frame")],
-        }),
+        module: require.resolve("lilconfig"),
+        find: "exports.lilconfigSync = lilconfigSync;",
+        replacement: "",
       },
     ],
   },
diff --git a/scripts/build/shims/parent-module.cjs b/scripts/build/shims/parent-module.cjs
deleted file mode 100644
index 113b1684d..000000000
--- a/scripts/build/shims/parent-module.cjs
+++ /dev/null
@@ -1,5 +0,0 @@
-"use strict";
-
-const parentModule = (file) => file;
-
-module.exports = parentModule;
diff --git a/src/common/mockable.js b/src/common/mockable.js
index ec2a5d160..1f406ced2 100644
--- a/src/common/mockable.js
+++ b/src/common/mockable.js
@@ -1,5 +1,5 @@
 import fs from "node:fs/promises";
-import { cosmiconfig } from "cosmiconfig";
+import { lilconfig } from "lilconfig";
 import { sync as findParentDir } from "find-parent-dir";
 import getStdin from "get-stdin";
 import { isCI } from "ci-info";
@@ -9,7 +9,7 @@ function writeFormattedFile(file, data) {
 }
 
 const mockable = {
-  cosmiconfig,
+  lilconfig,
   findParentDir,
   getStdin,
   isCI: () => isCI,
diff --git a/src/config/get-prettier-config-explorer.js b/src/config/get-prettier-config-explorer.js
index e39379aee..a2ceeef5a 100644
--- a/src/config/get-prettier-config-explorer.js
+++ b/src/config/get-prettier-config-explorer.js
@@ -1,9 +1,12 @@
+import { pathToFileURL } from "node:url";
 import parseToml from "@iarna/toml/parse-async.js";
 import parseJson5 from "json5/lib/parse.js";
+import yaml from "js-yaml";
+import parseJson from "parse-json";
 import mockable from "../common/mockable.js";
 import loadExternalConfig from "./load-external-config.js";
 
-const { cosmiconfig } = mockable;
+const { lilconfig } = mockable;
 
 const searchPlaces = [
   "package.json",
@@ -21,6 +24,20 @@ const searchPlaces = [
   ".prettierrc.toml",
 ];
 
+async function loadJs(filepath /*, content*/) {
+  const module = await import(pathToFileURL(filepath).href);
+  return module.default;
+}
+
+function loadYaml(filepath, content) {
+  try {
+    return yaml.load(content);
+  } catch (/** @type {any} */ error) {
+    error.message = `YAML Error in ${filepath}:\n${error.message}`;
+    throw error;
+  }
+}
+
 const loaders = {
   async ".toml"(filePath, content) {
     try {
@@ -38,6 +55,19 @@ const loaders = {
       throw error;
     }
   },
+  ".json"(filePath, content) {
+    try {
+      return parseJson(content);
+    } catch (/** @type {any} */ error) {
+      error.message = `JSON Error in ${filePath}:\n${error.message}`;
+      throw error;
+    }
+  },
+  ".js": loadJs,
+  ".mjs": loadJs,
+  ".yaml": loadYaml,
+  ".yml": loadYaml,
+  noExt: loadYaml,
 };
 
 async function transform(result) {
@@ -73,16 +103,10 @@ async function transform(result) {
 }
 
 /**
- * @param {{cache: boolean }} options
- * @return {ReturnType<import("cosmiconfig").cosmiconfig>}
+ * @return {ReturnType<import("lilconfig").lilconfig>}
  */
-function getExplorer(options) {
-  return cosmiconfig("prettier", {
-    cache: options.cache,
-    transform,
-    searchPlaces,
-    loaders,
-  });
+function getExplorer() {
+  return lilconfig("prettier", { searchPlaces, loaders, transform });
 }
 
 export default getExplorer;
diff --git a/src/config/resolve-config.js b/src/config/resolve-config.js
index 0473e4a2f..a867080bf 100644
--- a/src/config/resolve-config.js
+++ b/src/config/resolve-config.js
@@ -29,7 +29,9 @@ function loadPrettierConfig(filePath, options) {
   const { load, search } = getPrettierConfigExplorer({
     cache: Boolean(useCache),
   });
-  return configPath ? load(configPath) : search(filePath);
+  return configPath
+    ? load(configPath)
+    : search(filePath ? path.resolve(filePath) : undefined);
 }
 
 async function resolveConfig(filePath, options) {
@@ -62,7 +64,7 @@ async function resolveConfig(filePath, options) {
 
 async function resolveConfigFile(filePath) {
   const { search } = getPrettierConfigExplorer({ cache: false });
-  const result = await search(filePath);
+  const result = await search(filePath ? path.resolve(filePath) : undefined);
   return result ? result.filepath : null;
 }
 
diff --git a/tests/integration/__tests__/config-resolution.js b/tests/integration/__tests__/config-resolution.js
index 4e0cb05d0..dfd518295 100644
--- a/tests/integration/__tests__/config-resolution.js
+++ b/tests/integration/__tests__/config-resolution.js
@@ -281,7 +281,7 @@ test(".js config file", async () => {
     await expect(prettier.resolveConfig(file)).resolves.toMatchObject(config);
   }
 
-  const cjsError = /require\(\) of ES (?:Module|module)/;
+  const cjsError = /module is not defined in ES module scope/;
   for (const directoryName of [
     "cjs-prettier-config-js-in-type-module",
     "cjs-prettierrc-js-in-type-module",
diff --git a/tests/integration/__tests__/mockable.js b/tests/integration/__tests__/mockable.js
index 2018bd136..bde8dcb97 100644
--- a/tests/integration/__tests__/mockable.js
+++ b/tests/integration/__tests__/mockable.js
@@ -6,12 +6,12 @@ import { mockable } from "../env.js";
 const { __dirname } = createEsmUtils(import.meta);
 
 // This don't has to be the same result as `prettier.resolveConfig`,
-// Because we are testing with default `cosmiconfigOptions`
-describe("cosmiconfig", () => {
-  let cosmiconfig;
+// Because we are testing with default `lilconfigOptions`
+describe("lilconfig", () => {
+  let lilconfig;
   beforeAll(async () => {
     ({
-      default: { cosmiconfig },
+      default: { lilconfig },
     } = await import(pathToFileURL(mockable)));
   });
 
@@ -45,8 +45,7 @@ describe("cosmiconfig", () => {
 
   for (const { title, dirname, file, value } of configs) {
     test(`async version ${title}`, async () => {
-      const { config, filepath } =
-        await cosmiconfig("prettier").search(dirname);
+      const { config, filepath } = await lilconfig("prettier").search(dirname);
       expect(config).toEqual(value);
       expect(filepath).toBe(file);
     });
diff --git a/tests/integration/cli-worker.js b/tests/integration/cli-worker.js
index 7c8743af6..bc7283ae1 100644
--- a/tests/integration/cli-worker.js
+++ b/tests/integration/cli-worker.js
@@ -3,7 +3,7 @@ import fs from "node:fs";
 import path from "node:path";
 import url from "node:url";
 import readline from "node:readline";
-import { cosmiconfig } from "cosmiconfig";
+import { lilconfig } from "lilconfig";
 import { prettierCli, mockable as mockableModuleFile } from "./env.js";
 
 const normalizeToPosix =
@@ -66,8 +66,8 @@ async function run() {
   // eslint-disable-next-line require-await
   mockable.getStdin = async () => options.input || "";
   mockable.isCI = () => Boolean(options.ci);
-  mockable.cosmiconfig = (moduleName, options) =>
-    cosmiconfig(moduleName, {
+  mockable.lilconfig = (moduleName, options) =>
+    lilconfig(moduleName, {
       ...options,
       stopDir: url.fileURLToPath(new URL("./cli", import.meta.url)),
     });
diff --git a/yarn.lock b/yarn.lock
index 1d9e598c6..3c2e6137e 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -52,7 +52,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@babel/code-frame@npm:7.22.10, @babel/code-frame@npm:^7.0.0, @babel/code-frame@npm:^7.12.13, @babel/code-frame@npm:^7.22.5":
+"@babel/code-frame@npm:7.22.10, @babel/code-frame@npm:^7.0.0, @babel/code-frame@npm:^7.12.13, @babel/code-frame@npm:^7.21.4, @babel/code-frame@npm:^7.22.5":
   version: 7.22.10
   resolution: "@babel/code-frame@npm:7.22.10"
   dependencies:
@@ -592,9 +592,9 @@ __metadata:
   linkType: hard
 
 "@cspell/dict-css@npm:^4.0.6":
-  version: 4.0.6
-  resolution: "@cspell/dict-css@npm:4.0.6"
-  checksum: fc816014e4dfd78d4a00cd311c8f96657d899e10767766cdcdfbaf61beac8dd4d23e903dc40b679f31da7df03e7d4eb593a81810c50eeddbbb190b0d605160f0
+  version: 4.0.7
+  resolution: "@cspell/dict-css@npm:4.0.7"
+  checksum: 17a628450665f77a7b87edf98d12aa9f406b6805ca4a7e25ff1a9a58e9a0ae190583fd030b8143af5964f85dabfd1d510021f9072c2bbd478b547ac419689451
   languageName: node
   linkType: hard
 
@@ -2915,18 +2915,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"cosmiconfig@npm:8.2.0":
-  version: 8.2.0
-  resolution: "cosmiconfig@npm:8.2.0"
-  dependencies:
-    import-fresh: ^3.2.1
-    js-yaml: ^4.1.0
-    parse-json: ^5.0.0
-    path-type: ^4.0.0
-  checksum: 836d5d8efa750f3fb17b03d6ca74cd3154ed025dffd045304b3ef59637f662bde1e5dc88f8830080d180ec60841719cf4ea2ce73fb21ec694b16865c478ff297
-  languageName: node
-  linkType: hard
-
 "cross-env@npm:7.0.3":
   version: 7.0.3
   resolution: "cross-env@npm:7.0.3"
@@ -3351,7 +3339,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"error-ex@npm:^1.3.1":
+"error-ex@npm:^1.3.1, error-ex@npm:^1.3.2":
   version: 1.3.2
   resolution: "error-ex@npm:1.3.2"
   dependencies:
@@ -3360,7 +3348,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"es-abstract@npm:^1.19.0, es-abstract@npm:^1.20.4, es-abstract@npm:^1.21.2, es-abstract@npm:^1.21.3":
+"es-abstract@npm:^1.19.0, es-abstract@npm:^1.20.4, es-abstract@npm:^1.21.2, es-abstract@npm:^1.22.1":
   version: 1.22.1
   resolution: "es-abstract@npm:1.22.1"
   dependencies:
@@ -3408,13 +3396,13 @@ __metadata:
   linkType: hard
 
 "es-iterator-helpers@npm:^1.0.12":
-  version: 1.0.13
-  resolution: "es-iterator-helpers@npm:1.0.13"
+  version: 1.0.14
+  resolution: "es-iterator-helpers@npm:1.0.14"
   dependencies:
     asynciterator.prototype: ^1.0.0
     call-bind: ^1.0.2
     define-properties: ^1.2.0
-    es-abstract: ^1.21.3
+    es-abstract: ^1.22.1
     es-set-tostringtag: ^2.0.1
     function-bind: ^1.1.1
     get-intrinsic: ^1.2.1
@@ -3425,7 +3413,7 @@ __metadata:
     internal-slot: ^1.0.5
     iterator.prototype: ^1.1.0
     safe-array-concat: ^1.0.0
-  checksum: 1b08ae7388439121fee1129cb23497abd7bf23dd440f7fa44d119c9f92f38f9b7d75b7d98453fcd15948a7eb58abb2a48c673c7250d2e15871abe3641f567ed7
+  checksum: 484ca398389d5e259855e2d848573233985a7e7a4126c5de62c8a554174495aea47320ae1d2b55b757ece62ac1cb8455532aa61fd123fe4e01d0567eb2d7adfa
   languageName: node
   linkType: hard
 
@@ -5799,6 +5787,17 @@ __metadata:
   languageName: node
   linkType: hard
 
+"js-yaml@npm:4.1.0, js-yaml@npm:^4.1.0":
+  version: 4.1.0
+  resolution: "js-yaml@npm:4.1.0"
+  dependencies:
+    argparse: ^2.0.1
+  bin:
+    js-yaml: bin/js-yaml.js
+  checksum: c7830dfd456c3ef2c6e355cc5a92e6700ceafa1d14bba54497b34a99f0376cecbb3e9ac14d3e5849b426d5a5140709a66237a8c991c675431271c4ce5504151a
+  languageName: node
+  linkType: hard
+
 "js-yaml@npm:^3.13.1":
   version: 3.14.1
   resolution: "js-yaml@npm:3.14.1"
@@ -5811,17 +5810,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"js-yaml@npm:^4.1.0":
-  version: 4.1.0
-  resolution: "js-yaml@npm:4.1.0"
-  dependencies:
-    argparse: ^2.0.1
-  bin:
-    js-yaml: bin/js-yaml.js
-  checksum: c7830dfd456c3ef2c6e355cc5a92e6700ceafa1d14bba54497b34a99f0376cecbb3e9ac14d3e5849b426d5a5140709a66237a8c991c675431271c4ce5504151a
-  languageName: node
-  linkType: hard
-
 "jsdoctypeparser@npm:^9.0.0":
   version: 9.0.0
   resolution: "jsdoctypeparser@npm:9.0.0"
@@ -5879,6 +5867,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"json-parse-even-better-errors@npm:^3.0.0":
+  version: 3.0.0
+  resolution: "json-parse-even-better-errors@npm:3.0.0"
+  checksum: f1970b5220c7fa23d888565510752c3d5e863f93668a202fcaa719739fa41485dfc6a1db212f702ebd3c873851cc067aebc2917e3f79763cae2fdb95046f38f3
+  languageName: node
+  linkType: hard
+
 "json-schema-traverse@npm:^0.4.1":
   version: 0.4.1
   resolution: "json-schema-traverse@npm:0.4.1"
@@ -5965,6 +5960,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"lilconfig@npm:2.1.0":
+  version: 2.1.0
+  resolution: "lilconfig@npm:2.1.0"
+  checksum: 8549bb352b8192375fed4a74694cd61ad293904eee33f9d4866c2192865c44c4eb35d10782966242634e0cbc1e91fe62b1247f148dc5514918e3a966da7ea117
+  languageName: node
+  linkType: hard
+
 "lines-and-columns@npm:2.0.3, lines-and-columns@npm:^2.0.3":
   version: 2.0.3
   resolution: "lines-and-columns@npm:2.0.3"
@@ -6857,6 +6859,19 @@ __metadata:
   languageName: node
   linkType: hard
 
+"parse-json@npm:7.0.0":
+  version: 7.0.0
+  resolution: "parse-json@npm:7.0.0"
+  dependencies:
+    "@babel/code-frame": ^7.21.4
+    error-ex: ^1.3.2
+    json-parse-even-better-errors: ^3.0.0
+    lines-and-columns: ^2.0.3
+    type-fest: ^3.8.0
+  checksum: de6c756f65af568439a7ac87c830e5a8b98bd25160a8832872183588a139f9c8fd8bab96c8bc49788f5a957a59d8de7b5a3fa8a01027248b3079433f81dd5590
+  languageName: node
+  linkType: hard
+
 "parse-json@npm:^4.0.0":
   version: 4.0.0
   resolution: "parse-json@npm:4.0.0"
@@ -7161,7 +7176,6 @@ __metadata:
     ci-info: 3.8.0
     cjk-regex: 3.0.0
     collapse-white-space: 1.0.6
-    cosmiconfig: 8.2.0
     cross-env: 7.0.3
     cspell: 7.0.1
     css-units-list: 2.0.1
@@ -7210,8 +7224,10 @@ __metadata:
     jest-snapshot-serializer-ansi: 2.1.0
     jest-snapshot-serializer-raw: 2.0.0
     jest-watch-typeahead: 2.2.2
+    js-yaml: 4.1.0
     json5: 2.2.3
     leven: 4.0.0
+    lilconfig: 2.1.0
     lines-and-columns: 2.0.3
     linguist-languages: 7.26.1
     magic-string: 0.30.3
@@ -7222,6 +7238,7 @@ __metadata:
     n-readlines: 1.0.1
     npm-run-all: 4.1.5
     outdent: 0.8.0
+    parse-json: 7.0.0
     path-browserify: 1.0.1
     please-upgrade-node: 3.2.0
     postcss: 8.4.28
@@ -8497,10 +8514,10 @@ __metadata:
   languageName: node
   linkType: hard
 
-"type-fest@npm:^3.0.0":
-  version: 3.12.0
-  resolution: "type-fest@npm:3.12.0"
-  checksum: 11cb6f40e42f92c462a13677eafedf5c48353eaefa8e489a146e55fe0ae5cecd59a2ba03cd6b294345b5ea304361891a6313c23ed959fa0117f63fb71ee6cbab
+"type-fest@npm:^3.0.0, type-fest@npm:^3.8.0":
+  version: 3.13.1
+  resolution: "type-fest@npm:3.13.1"
+  checksum: c06b0901d54391dc46de3802375f5579868949d71f93b425ce564e19a428a0d411ae8d8cb0e300d330071d86152c3ea86e744c3f2860a42a79585b6ec2fdae8e
   languageName: node
   linkType: hard