diff --git a/packages/pyright-internal/package-lock.json b/packages/pyright-internal/package-lock.json
index e2662b444..95aab9fb7 100644
--- a/packages/pyright-internal/package-lock.json
+++ b/packages/pyright-internal/package-lock.json
@@ -16,10 +16,10 @@
                 "chokidar": "^3.6.0",
                 "command-line-args": "^5.2.1",
                 "diff": "^7.0.0",
-                "js-toml": "^1.0.0",
                 "jsonc-parser": "^3.3.1",
                 "leven": "3.1.0",
                 "pyright-to-gitlab-ci": "^0.1.3",
+                "smol-toml": "^1.3.0",
                 "source-map-support": "^0.5.21",
                 "tmp": "^0.2.3",
                 "vscode-jsonrpc": "^9.0.0-next.5",
@@ -580,18 +580,6 @@
                 "@babel/core": "^7.0.0-0"
             }
         },
-        "node_modules/@babel/runtime-corejs3": {
-            "version": "7.25.9",
-            "resolved": "https://registry.npmjs.org/@babel/runtime-corejs3/-/runtime-corejs3-7.25.9.tgz",
-            "integrity": "sha512-eHeq2HWhgn3aH6Gz4Dnajqp8U5DjBg3h933LlGJ52hAN6Kx34KAL7O3NzwTrldl9PrgKTyBcz0ScVIQ3A6e2fA==",
-            "dependencies": {
-                "core-js-pure": "^3.30.2",
-                "regenerator-runtime": "^0.14.0"
-            },
-            "engines": {
-                "node": ">=6.9.0"
-            }
-        },
         "node_modules/@babel/template": {
             "version": "7.25.0",
             "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.25.0.tgz",
@@ -644,40 +632,6 @@
             "integrity": "sha512-0hYQ8SB4Db5zvZB4axdMHGwEaQjkZzFjQiN9LVYvIFB2nSUHW9tYpxWriPrWDASIxiaXax83REcLxuSdnGPZtw==",
             "dev": true
         },
-        "node_modules/@chevrotain/cst-dts-gen": {
-            "version": "11.0.3",
-            "resolved": "https://registry.npmjs.org/@chevrotain/cst-dts-gen/-/cst-dts-gen-11.0.3.tgz",
-            "integrity": "sha512-BvIKpRLeS/8UbfxXxgC33xOumsacaeCKAjAeLyOn7Pcp95HiRbrpl14S+9vaZLolnbssPIUuiUd8IvgkRyt6NQ==",
-            "dependencies": {
-                "@chevrotain/gast": "11.0.3",
-                "@chevrotain/types": "11.0.3",
-                "lodash-es": "4.17.21"
-            }
-        },
-        "node_modules/@chevrotain/gast": {
-            "version": "11.0.3",
-            "resolved": "https://registry.npmjs.org/@chevrotain/gast/-/gast-11.0.3.tgz",
-            "integrity": "sha512-+qNfcoNk70PyS/uxmj3li5NiECO+2YKZZQMbmjTqRI3Qchu8Hig/Q9vgkHpI3alNjr7M+a2St5pw5w5F6NL5/Q==",
-            "dependencies": {
-                "@chevrotain/types": "11.0.3",
-                "lodash-es": "4.17.21"
-            }
-        },
-        "node_modules/@chevrotain/regexp-to-ast": {
-            "version": "11.0.3",
-            "resolved": "https://registry.npmjs.org/@chevrotain/regexp-to-ast/-/regexp-to-ast-11.0.3.tgz",
-            "integrity": "sha512-1fMHaBZxLFvWI067AVbGJav1eRY7N8DDvYCTwGBiE/ytKBgP8azTdgyrKyWZ9Mfh09eHWb5PgTSO8wi7U824RA=="
-        },
-        "node_modules/@chevrotain/types": {
-            "version": "11.0.3",
-            "resolved": "https://registry.npmjs.org/@chevrotain/types/-/types-11.0.3.tgz",
-            "integrity": "sha512-gsiM3G8b58kZC2HaWR50gu6Y1440cHiJ+i3JUvcp/35JchYejb2+5MVeJK0iKThYpAa/P2PYFV4hoi44HD+aHQ=="
-        },
-        "node_modules/@chevrotain/utils": {
-            "version": "11.0.3",
-            "resolved": "https://registry.npmjs.org/@chevrotain/utils/-/utils-11.0.3.tgz",
-            "integrity": "sha512-YslZMgtJUyuMbZ+aKvfF3x1f5liK4mWNxghFRv7jqRR9C3R3fAOGTTKvxXDa2Y1s9zSbcpuO0cAxDYsc9SrXoQ=="
-        },
         "node_modules/@discoveryjs/json-ext": {
             "version": "0.5.7",
             "resolved": "https://registry.npmjs.org/@discoveryjs/json-ext/-/json-ext-0.5.7.tgz",
@@ -2353,19 +2307,6 @@
                 "node": ">=10"
             }
         },
-        "node_modules/chevrotain": {
-            "version": "11.0.3",
-            "resolved": "https://registry.npmjs.org/chevrotain/-/chevrotain-11.0.3.tgz",
-            "integrity": "sha512-ci2iJH6LeIkvP9eJW6gpueU8cnZhv85ELY8w8WiFtNjMHA5ad6pQLaJo9mEly/9qUyCpvqX8/POVUTf18/HFdw==",
-            "dependencies": {
-                "@chevrotain/cst-dts-gen": "11.0.3",
-                "@chevrotain/gast": "11.0.3",
-                "@chevrotain/regexp-to-ast": "11.0.3",
-                "@chevrotain/types": "11.0.3",
-                "@chevrotain/utils": "11.0.3",
-                "lodash-es": "4.17.21"
-            }
-        },
         "node_modules/chokidar": {
             "version": "3.6.0",
             "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-3.6.0.tgz",
@@ -2647,16 +2588,6 @@
                 "node": ">=10.13.0"
             }
         },
-        "node_modules/core-js-pure": {
-            "version": "3.38.1",
-            "resolved": "https://registry.npmjs.org/core-js-pure/-/core-js-pure-3.38.1.tgz",
-            "integrity": "sha512-BY8Etc1FZqdw1glX0XNOq2FDwfrg/VGqoZOZCdaL+UmdaqDwQwYXkMJT4t6In+zfEfOJDcM9T0KdbBeJg8KKCQ==",
-            "hasInstallScript": true,
-            "funding": {
-                "type": "opencollective",
-                "url": "https://opencollective.com/core-js"
-            }
-        },
         "node_modules/create-jest": {
             "version": "29.7.0",
             "resolved": "https://registry.npmjs.org/create-jest/-/create-jest-29.7.0.tgz",
@@ -4292,15 +4223,6 @@
             "integrity": "sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==",
             "dev": true
         },
-        "node_modules/js-toml": {
-            "version": "1.0.0",
-            "resolved": "https://registry.npmjs.org/js-toml/-/js-toml-1.0.0.tgz",
-            "integrity": "sha512-G757004huuG5Cjg8KUoVTS4zNRR4449KG8kjtFQS0yyQnceq3KfxcArThcqUV2cwdpd0C9I+e1WciK3Xm4cWJw==",
-            "dependencies": {
-                "chevrotain": "^11.0.3",
-                "xregexp": "^5.1.1"
-            }
-        },
         "node_modules/js-yaml": {
             "version": "3.14.1",
             "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.14.1.tgz",
@@ -4422,11 +4344,6 @@
                 "node": ">=8"
             }
         },
-        "node_modules/lodash-es": {
-            "version": "4.17.21",
-            "resolved": "https://registry.npmjs.org/lodash-es/-/lodash-es-4.17.21.tgz",
-            "integrity": "sha512-mKnC+QJ9pWVzv+C4/U3rRsHapFfHvQFoFB92e52xeyGMcX6/OlIl78je1u8vePzYZSkkogMPJ2yjxxsb89cxyw=="
-        },
         "node_modules/lodash.camelcase": {
             "version": "4.3.0",
             "resolved": "https://registry.npmjs.org/lodash.camelcase/-/lodash.camelcase-4.3.0.tgz",
@@ -4944,11 +4861,6 @@
                 "node": ">=6"
             }
         },
-        "node_modules/regenerator-runtime": {
-            "version": "0.14.1",
-            "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.14.1.tgz",
-            "integrity": "sha512-dYnhHh0nJoMfnkZs6GmmhFknAGRrLznOu5nc9ML+EJxGvrx6H7teuevqVqCuPcPK//3eDrrjQhehXVx9cnkGdw=="
-        },
         "node_modules/require-directory": {
             "version": "2.1.1",
             "resolved": "https://registry.npmjs.org/require-directory/-/require-directory-2.1.1.tgz",
@@ -5203,6 +5115,18 @@
                 "url": "https://github.com/sponsors/sindresorhus"
             }
         },
+        "node_modules/smol-toml": {
+            "version": "1.3.0",
+            "resolved": "https://registry.npmjs.org/smol-toml/-/smol-toml-1.3.0.tgz",
+            "integrity": "sha512-tWpi2TsODPScmi48b/OQZGi2lgUmBCHy6SZrhi/FdnnHiU1GwebbCfuQuxsC3nHaLwtYeJGPrDZDIeodDOc4pA==",
+            "license": "BSD-3-Clause",
+            "engines": {
+                "node": ">= 18"
+            },
+            "funding": {
+                "url": "https://github.com/sponsors/cyyynthia"
+            }
+        },
         "node_modules/source-list-map": {
             "version": "2.0.1",
             "resolved": "https://registry.npmjs.org/source-list-map/-/source-list-map-2.0.1.tgz",
@@ -6167,14 +6091,6 @@
             "integrity": "sha512-huCv9IH9Tcf95zuYCsQraZtWnJvBtLVE0QHMOs8bWyZAFZNDcYjsPq1nEx8jKA9y+Beo9v+7OBPRisQTjinQMw==",
             "dev": true
         },
-        "node_modules/xregexp": {
-            "version": "5.1.1",
-            "resolved": "https://registry.npmjs.org/xregexp/-/xregexp-5.1.1.tgz",
-            "integrity": "sha512-fKXeVorD+CzWvFs7VBuKTYIW63YD1e1osxwQ8caZ6o1jg6pDAbABDG54LCIq0j5cy7PjRvGIq6sef9DYPXpncg==",
-            "dependencies": {
-                "@babel/runtime-corejs3": "^7.16.5"
-            }
-        },
         "node_modules/y18n": {
             "version": "5.0.8",
             "resolved": "https://registry.npmjs.org/y18n/-/y18n-5.0.8.tgz",
diff --git a/packages/pyright-internal/package.json b/packages/pyright-internal/package.json
index aa9a9390d..a4f61c2b8 100644
--- a/packages/pyright-internal/package.json
+++ b/packages/pyright-internal/package.json
@@ -26,10 +26,10 @@
         "chokidar": "^3.6.0",
         "command-line-args": "^5.2.1",
         "diff": "^7.0.0",
-        "js-toml": "^1.0.0",
         "jsonc-parser": "^3.3.1",
         "leven": "3.1.0",
         "pyright-to-gitlab-ci": "^0.1.3",
+        "smol-toml": "^1.3.0",
         "source-map-support": "^0.5.21",
         "tmp": "^0.2.3",
         "vscode-jsonrpc": "^9.0.0-next.5",
diff --git a/packages/pyright-internal/src/analyzer/service.ts b/packages/pyright-internal/src/analyzer/service.ts
index db4ef5d47..3bd7eddb8 100644
--- a/packages/pyright-internal/src/analyzer/service.ts
+++ b/packages/pyright-internal/src/analyzer/service.ts
@@ -8,7 +8,7 @@
  * Python files.
  */
 
-import * as TOML from 'js-toml';
+import { parse } from 'smol-toml';
 import * as JSONC from 'jsonc-parser';
 import { AbstractCancellationTokenSource, CancellationToken } from 'vscode-languageserver';
 
@@ -1172,7 +1172,7 @@ export class AnalyzerService {
     private _parsePyprojectTomlFile(pyprojectPath: Uri): object | undefined {
         return this._attemptParseFile(pyprojectPath, (fileContents, attemptCount) => {
             try {
-                const configObj = TOML.load(fileContents);
+                const configObj = parse(fileContents);
                 if (configObj && 'tool' in configObj) {
                     const toml = configObj.tool as Record<string, object>;
                     if (toml.basedpyright && toml.pyright) {