diff --git a/cspell.json b/cspell.json
index b88278a5c..a33d89adf 100644
--- a/cspell.json
+++ b/cspell.json
@@ -117,7 +117,6 @@
         "htmlhint",
         "hugomrdias",
         "hwba",
-        "iarna",
         "icchiman",
         "ICSS",
         "ikatyang",
@@ -250,6 +249,7 @@
         "Simen",
         "skratchdot",
         "Skyscanner",
+        "smol",
         "softline",
         "softlines",
         "Sorin",
@@ -283,9 +283,9 @@
         "Transloadit",
         "trippable",
         "tsep",
+        "TSES",
         "tshirt",
         "tshirts",
-        "TSES",
         "TSJS",
         "typecasted",
         "typecheck",
diff --git a/package.json b/package.json
index 7451f52e3..5c152a7bb 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,6 @@
     "@babel/parser": "7.24.8",
     "@babel/types": "7.24.8",
     "@glimmer/syntax": "0.92.0",
-    "@iarna/toml": "2.2.5",
     "@prettier/is-es5-identifier-name": "0.2.0",
     "@prettier/parse-srcset": "3.1.0",
     "@typescript-eslint/typescript-estree": "8.0.0-alpha.41",
@@ -94,6 +93,7 @@
     "remark-math": "3.0.1",
     "remark-parse": "8.0.3",
     "sdbm": "2.0.0",
+    "smol-toml": "1.3.0",
     "strip-ansi": "7.1.0",
     "to-fast-properties": "4.0.0",
     "typescript": "5.5.4",
diff --git a/scripts/build/config.js b/scripts/build/config.js
index 336d20eef..d966cb684 100644
--- a/scripts/build/config.js
+++ b/scripts/build/config.js
@@ -582,11 +582,6 @@ const nodejsFiles = [
   {
     input: "src/index.js",
     replaceModule: [
-      {
-        module: require.resolve("@iarna/toml/lib/toml-parser.js"),
-        find: "const utilInspect = eval(\"require('util').inspect\")",
-        replacement: "const utilInspect = require('util').inspect",
-      },
       // `editorconfig` use a older version of `semver` and only uses `semver.gte`
       {
         module: require.resolve("editorconfig"),
diff --git a/src/config/prettier-config/loaders.js b/src/config/prettier-config/loaders.js
index 876113c5c..0a2d95a81 100644
--- a/src/config/prettier-config/loaders.js
+++ b/src/config/prettier-config/loaders.js
@@ -1,9 +1,9 @@
 import { pathToFileURL } from "node:url";
 
-import parseToml from "@iarna/toml/parse-async.js";
 import { load as parseYaml } from "js-yaml";
 import json5 from "json5";
 import parseJson from "parse-json";
+import { parse as parseToml } from "smol-toml";
 
 import readFile from "../../utils/read-file.js";
 
@@ -46,7 +46,7 @@ const loaders = {
   async ".toml"(file) {
     const content = await readFile(file);
     try {
-      return await parseToml(content);
+      return parseToml(content);
     } catch (/** @type {any} */ error) {
       error.message = `TOML Error in ${file}:\n${error.message}`;
       throw error;
diff --git a/tests/integration/__tests__/config-invalid.js b/tests/integration/__tests__/config-invalid.js
index 0d93deae5..8d7aa2f6f 100644
--- a/tests/integration/__tests__/config-invalid.js
+++ b/tests/integration/__tests__/config-invalid.js
@@ -126,17 +126,16 @@ describe("Invalid toml file", () => {
     stdout: "",
     write: [],
     stderr: expect.stringContaining(
-      /* cSpell:disable */
       outdent`
-        Unexpected character, expecting string, number, datetime, boolean, inline array or inline table at row 1, col 4, pos 3:
-        1> a=
+        Invalid TOML document: incomplete key-value declaration: no value specified
+
+        1:  a=
               ^
-        2:   b!=
+        2:    b!=
       `
         .split("\n")
         .map((line) => `[error] ${line}`)
         .join("\n"),
-      /* cSpell:enable */
     ),
   });
 });
diff --git a/yarn.lock b/yarn.lock
index 2b15cae6f..5ed152556 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1260,13 +1260,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@iarna/toml@npm:2.2.5":
-  version: 2.2.5
-  resolution: "@iarna/toml@npm:2.2.5"
-  checksum: 10/b61426dc1a3297bbcb24cb8e9c638663866b4bb6f28f2c377b167e4b1f8956d8d208c484b73bb59f4232249903545cc073364c43576d2d5ad66afbd730ad24a9
-  languageName: node
-  linkType: hard
-
 "@isaacs/cliui@npm:^8.0.2":
   version: 8.0.2
   resolution: "@isaacs/cliui@npm:8.0.2"
@@ -7335,7 +7328,6 @@ __metadata:
     "@eslint/js": "npm:9.7.0"
     "@glimmer/reference": "npm:0.92.0"
     "@glimmer/syntax": "npm:0.92.0"
-    "@iarna/toml": "npm:2.2.5"
     "@prettier/is-es5-identifier-name": "npm:0.2.0"
     "@prettier/parse-srcset": "npm:3.1.0"
     "@stylistic/eslint-plugin-js": "npm:2.3.0"
@@ -7435,6 +7427,7 @@ __metadata:
     sdbm: "npm:2.0.0"
     semver: "npm:7.6.2"
     serialize-javascript: "npm:6.0.2"
+    smol-toml: "npm:1.3.0"
     snapshot-diff: "npm:0.10.0"
     strip-ansi: "npm:7.1.0"
     tempy: "npm:3.1.0"
@@ -8065,6 +8058,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"smol-toml@npm:1.3.0":
+  version: 1.3.0
+  resolution: "smol-toml@npm:1.3.0"
+  checksum: 10/dc3e49a9202abca4a60c352ff48c8088a0c48886924b81a0fbab8c66d4575aaa1867f4eac783acea00dcfa34047ccd22634040d2282f9ccb05dc73511c1b0e4e
+  languageName: node
+  linkType: hard
+
 "snapshot-diff@npm:0.10.0":
   version: 0.10.0
   resolution: "snapshot-diff@npm:0.10.0"