diff --git a/packages/backend/package.json b/packages/backend/package.json
index e6a247f44e..473179b137 100644
--- a/packages/backend/package.json
+++ b/packages/backend/package.json
@@ -113,8 +113,6 @@
 		"systeminformation": "5.16.5",
 		"tinycolor2": "1.4.2",
 		"tmp": "0.2.1",
-		"ts-loader": "9.4.2",
-		"ts-node": "10.9.1",
 		"tsc-alias": "1.8.2",
 		"tsconfig-paths": "4.1.1",
 		"twemoji-parser": "14.0.0",
diff --git a/packages/backend/test/loader.js b/packages/backend/test/loader.js
deleted file mode 100644
index 6b21587e32..0000000000
--- a/packages/backend/test/loader.js
+++ /dev/null
@@ -1,34 +0,0 @@
-/**
- * ts-node/esmローダーに投げる前にpath mappingを解決する
- * 参考
- * - https://github.com/TypeStrong/ts-node/discussions/1450#discussioncomment-1806115
- * - https://nodejs.org/api/esm.html#loaders
- * ※ https://github.com/TypeStrong/ts-node/pull/1585 が取り込まれたらこのカスタムローダーは必要なくなる
- */
-
-import { resolve as resolveTs, load } from 'ts-node/esm';
-import { loadConfig, createMatchPath } from 'tsconfig-paths';
-import { pathToFileURL } from 'url';
-
-const tsconfig = loadConfig();
-const matchPath = createMatchPath(tsconfig.absoluteBaseUrl, tsconfig.paths);
-
-export function resolve(specifier, ctx, defaultResolve) {
-	let resolvedSpecifier;
-	if (specifier.endsWith('.js')) {
-		// maybe transpiled
-		const specifierWithoutExtension = specifier.substring(0, specifier.length - '.js'.length);
-		const matchedSpecifier = matchPath(specifierWithoutExtension);
-		if (matchedSpecifier) {
-			resolvedSpecifier = pathToFileURL(`${matchedSpecifier}.js`).href;
-		}
-	} else {
-		const matchedSpecifier = matchPath(specifier);
-		if (matchedSpecifier) {
-			resolvedSpecifier = pathToFileURL(matchedSpecifier).href;
-		}
-	}
-	return resolveTs(resolvedSpecifier ?? specifier, ctx, defaultResolve);
-}
-
-export { load };
diff --git a/yarn.lock b/yarn.lock
index 7344acae43..aab9f3f288 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -583,15 +583,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@cspotcode/source-map-support@npm:^0.8.0":
-  version: 0.8.1
-  resolution: "@cspotcode/source-map-support@npm:0.8.1"
-  dependencies:
-    "@jridgewell/trace-mapping": 0.3.9
-  checksum: 5718f267085ed8edb3e7ef210137241775e607ee18b77d95aa5bd7514f47f5019aa2d82d96b3bf342ef7aa890a346fa1044532ff7cc3009e7d24fce3ce6200fa
-  languageName: node
-  linkType: hard
-
 "@cypress/request@npm:^2.88.10":
   version: 2.88.10
   resolution: "@cypress/request@npm:2.88.10"
@@ -1180,7 +1171,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@jridgewell/resolve-uri@npm:3.1.0, @jridgewell/resolve-uri@npm:^3.0.3":
+"@jridgewell/resolve-uri@npm:3.1.0":
   version: 3.1.0
   resolution: "@jridgewell/resolve-uri@npm:3.1.0"
   checksum: b5ceaaf9a110fcb2780d1d8f8d4a0bfd216702f31c988d8042e5f8fbe353c55d9b0f55a1733afdc64806f8e79c485d2464680ac48a0d9fcadb9548ee6b81d267
@@ -1211,16 +1202,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@jridgewell/trace-mapping@npm:0.3.9":
-  version: 0.3.9
-  resolution: "@jridgewell/trace-mapping@npm:0.3.9"
-  dependencies:
-    "@jridgewell/resolve-uri": ^3.0.3
-    "@jridgewell/sourcemap-codec": ^1.4.10
-  checksum: d89597752fd88d3f3480845691a05a44bd21faac18e2185b6f436c3b0fd0c5a859fbbd9aaa92050c4052caf325ad3e10e2e1d1b64327517471b7d51babc0ddef
-  languageName: node
-  linkType: hard
-
 "@jridgewell/trace-mapping@npm:^0.3.12, @jridgewell/trace-mapping@npm:^0.3.15, @jridgewell/trace-mapping@npm:^0.3.9":
   version: 0.3.17
   resolution: "@jridgewell/trace-mapping@npm:0.3.17"
@@ -1956,34 +1937,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@tsconfig/node10@npm:^1.0.7":
-  version: 1.0.9
-  resolution: "@tsconfig/node10@npm:1.0.9"
-  checksum: a33ae4dc2a621c0678ac8ac4bceb8e512ae75dac65417a2ad9b022d9b5411e863c4c198b6ba9ef659e14b9fb609bbec680841a2e84c1172df7a5ffcf076539df
-  languageName: node
-  linkType: hard
-
-"@tsconfig/node12@npm:^1.0.7":
-  version: 1.0.11
-  resolution: "@tsconfig/node12@npm:1.0.11"
-  checksum: 5ce29a41b13e7897a58b8e2df11269c5395999e588b9a467386f99d1d26f6c77d1af2719e407621412520ea30517d718d5192a32403b8dfcc163bf33e40a338a
-  languageName: node
-  linkType: hard
-
-"@tsconfig/node14@npm:^1.0.0":
-  version: 1.0.3
-  resolution: "@tsconfig/node14@npm:1.0.3"
-  checksum: 19275fe80c4c8d0ad0abed6a96dbf00642e88b220b090418609c4376e1cef81bf16237bf170ad1b341452feddb8115d8dd2e5acdfdea1b27422071163dc9ba9d
-  languageName: node
-  linkType: hard
-
-"@tsconfig/node16@npm:^1.0.2":
-  version: 1.0.3
-  resolution: "@tsconfig/node16@npm:1.0.3"
-  checksum: 3a8b657dd047495b7ad23437d6afd20297ce90380ff0bdee93fc7d39a900dbd8d9e26e53ff6b465e7967ce2adf0b218782590ce9013285121e6a5928fbd6819f
-  languageName: node
-  linkType: hard
-
 "@types/accepts@npm:1.3.5":
   version: 1.3.5
   resolution: "@types/accepts@npm:1.3.5"
@@ -3103,7 +3056,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"acorn-walk@npm:^8.0.2, acorn-walk@npm:^8.1.1":
+"acorn-walk@npm:^8.0.2":
   version: 8.2.0
   resolution: "acorn-walk@npm:8.2.0"
   checksum: 1715e76c01dd7b2d4ca472f9c58968516a4899378a63ad5b6c2d668bba8da21a71976c14ec5f5b75f887b6317c4ae0b897ab141c831d741dc76024d8745f1ad1
@@ -3119,7 +3072,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"acorn@npm:^8.1.0, acorn@npm:^8.4.1, acorn@npm:^8.5.0, acorn@npm:^8.8.0, acorn@npm:^8.8.1":
+"acorn@npm:^8.1.0, acorn@npm:^8.5.0, acorn@npm:^8.8.0, acorn@npm:^8.8.1":
   version: 8.8.1
   resolution: "acorn@npm:8.8.1"
   bin:
@@ -3432,13 +3385,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"arg@npm:^4.1.0":
-  version: 4.1.3
-  resolution: "arg@npm:4.1.3"
-  checksum: 544af8dd3f60546d3e4aff084d451b96961d2267d668670199692f8d054f0415d86fc5497d0e641e91546f0aa920e7c29e5250e99fc89f5552a34b5d93b77f43
-  languageName: node
-  linkType: hard
-
 "arg@npm:^5.0.2":
   version: 5.0.2
   resolution: "arg@npm:5.0.2"
@@ -4065,8 +4011,6 @@ __metadata:
     systeminformation: 5.16.5
     tinycolor2: 1.4.2
     tmp: 0.2.1
-    ts-loader: 9.4.2
-    ts-node: 10.9.1
     tsc-alias: 1.8.2
     tsconfig-paths: 4.1.1
     twemoji-parser: 14.0.0
@@ -5499,13 +5443,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"create-require@npm:^1.1.0":
-  version: 1.1.1
-  resolution: "create-require@npm:1.1.1"
-  checksum: a9a1503d4390d8b59ad86f4607de7870b39cad43d929813599a23714831e81c520bddf61bcdd1f8e30f05fd3a2b71ae8538e946eb2786dc65c2bbc520f692eff
-  languageName: node
-  linkType: hard
-
 "cron-parser@npm:^4.2.1":
   version: 4.7.0
   resolution: "cron-parser@npm:4.7.0"
@@ -6083,13 +6020,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"diff@npm:^4.0.1":
-  version: 4.0.2
-  resolution: "diff@npm:4.0.2"
-  checksum: f2c09b0ce4e6b301c221addd83bf3f454c0bc00caa3dd837cf6c127d6edf7223aa2bbe3b688feea110b7f262adbfc845b757c44c8a9f8c0c5b15d8fa9ce9d20d
-  languageName: node
-  linkType: hard
-
 "dijkstrajs@npm:^1.0.1":
   version: 1.0.2
   resolution: "dijkstrajs@npm:1.0.2"
@@ -6383,16 +6313,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"enhanced-resolve@npm:^5.0.0":
-  version: 5.12.0
-  resolution: "enhanced-resolve@npm:5.12.0"
-  dependencies:
-    graceful-fs: ^4.2.4
-    tapable: ^2.2.0
-  checksum: bf3f787facaf4ce3439bef59d148646344e372bef5557f0d37ea8aa02c51f50a925cd1f07b8d338f18992c29f544ec235a8c64bcdb56030196c48832a5494174
-  languageName: node
-  linkType: hard
-
 "enquirer@npm:^2.3.6":
   version: 2.3.6
   resolution: "enquirer@npm:2.3.6"
@@ -8597,7 +8517,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"graceful-fs@npm:^4.0.0, graceful-fs@npm:^4.1.11, graceful-fs@npm:^4.1.2, graceful-fs@npm:^4.1.6, graceful-fs@npm:^4.2.0, graceful-fs@npm:^4.2.2, graceful-fs@npm:^4.2.4, graceful-fs@npm:^4.2.6, graceful-fs@npm:^4.2.9":
+"graceful-fs@npm:^4.0.0, graceful-fs@npm:^4.1.11, graceful-fs@npm:^4.1.2, graceful-fs@npm:^4.1.6, graceful-fs@npm:^4.2.0, graceful-fs@npm:^4.2.2, graceful-fs@npm:^4.2.6, graceful-fs@npm:^4.2.9":
   version: 4.2.10
   resolution: "graceful-fs@npm:4.2.10"
   checksum: 3f109d70ae123951905d85032ebeae3c2a5a7a997430df00ea30df0e3a6c60cf6689b109654d6fdacd28810a053348c4d14642da1d075049e6be1ba5216218da
@@ -11401,13 +11321,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"make-error@npm:^1.1.1":
-  version: 1.3.6
-  resolution: "make-error@npm:1.3.6"
-  checksum: b86e5e0e25f7f777b77fabd8e2cbf15737972869d852a22b7e73c17623928fccb826d8e46b9951501d3f20e51ad74ba8c59ed584f610526a48f8ccf88aaec402
-  languageName: node
-  linkType: hard
-
 "make-fetch-happen@npm:^10.0.3":
   version: 10.2.1
   resolution: "make-fetch-happen@npm:10.2.1"
@@ -11550,7 +11463,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"micromatch@npm:^4.0.0, micromatch@npm:^4.0.4":
+"micromatch@npm:^4.0.4":
   version: 4.0.5
   resolution: "micromatch@npm:4.0.5"
   dependencies:
@@ -14955,7 +14868,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"semver@npm:7.3.8, semver@npm:^7.3.2, semver@npm:^7.3.4, semver@npm:^7.3.5, semver@npm:^7.3.6, semver@npm:^7.3.7":
+"semver@npm:7.3.8, semver@npm:^7.3.2, semver@npm:^7.3.5, semver@npm:^7.3.6, semver@npm:^7.3.7":
   version: 7.3.8
   resolution: "semver@npm:7.3.8"
   dependencies:
@@ -15909,13 +15822,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"tapable@npm:^2.2.0":
-  version: 2.2.1
-  resolution: "tapable@npm:2.2.1"
-  checksum: 3b7a1b4d86fa940aad46d9e73d1e8739335efd4c48322cb37d073eb6f80f5281889bf0320c6d8ffcfa1a0dd5bfdbd0f9d037e252ef972aca595330538aac4d51
-  languageName: node
-  linkType: hard
-
 "tar-fs@npm:^2.0.0, tar-fs@npm:^2.1.1":
   version: 2.1.1
   resolution: "tar-fs@npm:2.1.1"
@@ -16293,59 +16199,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"ts-loader@npm:9.4.2":
-  version: 9.4.2
-  resolution: "ts-loader@npm:9.4.2"
-  dependencies:
-    chalk: ^4.1.0
-    enhanced-resolve: ^5.0.0
-    micromatch: ^4.0.0
-    semver: ^7.3.4
-  peerDependencies:
-    typescript: "*"
-    webpack: ^5.0.0
-  checksum: 6f306ee4c615c2a159fb177561e3fb86ca2cbd6c641e710d408a64b4978e1ff3f2c9733df07bff27d3f82efbfa7c287523d4306049510c7485ac2669a9c37eb0
-  languageName: node
-  linkType: hard
-
-"ts-node@npm:10.9.1":
-  version: 10.9.1
-  resolution: "ts-node@npm:10.9.1"
-  dependencies:
-    "@cspotcode/source-map-support": ^0.8.0
-    "@tsconfig/node10": ^1.0.7
-    "@tsconfig/node12": ^1.0.7
-    "@tsconfig/node14": ^1.0.0
-    "@tsconfig/node16": ^1.0.2
-    acorn: ^8.4.1
-    acorn-walk: ^8.1.1
-    arg: ^4.1.0
-    create-require: ^1.1.0
-    diff: ^4.0.1
-    make-error: ^1.1.1
-    v8-compile-cache-lib: ^3.0.1
-    yn: 3.1.1
-  peerDependencies:
-    "@swc/core": ">=1.2.50"
-    "@swc/wasm": ">=1.2.50"
-    "@types/node": "*"
-    typescript: ">=2.7"
-  peerDependenciesMeta:
-    "@swc/core":
-      optional: true
-    "@swc/wasm":
-      optional: true
-  bin:
-    ts-node: dist/bin.js
-    ts-node-cwd: dist/bin-cwd.js
-    ts-node-esm: dist/bin-esm.js
-    ts-node-script: dist/bin-script.js
-    ts-node-transpile-only: dist/bin-transpile.js
-    ts-script: dist/bin-script-deprecated.js
-  checksum: 090adff1302ab20bd3486e6b4799e90f97726ed39e02b39e566f8ab674fd5bd5f727f43615debbfc580d33c6d9d1c6b1b3ce7d8e3cca3e20530a145ffa232c35
-  languageName: node
-  linkType: hard
-
 "tsc-alias@npm:1.8.2":
   version: 1.8.2
   resolution: "tsc-alias@npm:1.8.2"
@@ -16942,13 +16795,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"v8-compile-cache-lib@npm:^3.0.1":
-  version: 3.0.1
-  resolution: "v8-compile-cache-lib@npm:3.0.1"
-  checksum: 78089ad549e21bcdbfca10c08850022b22024cdcc2da9b168bcf5a73a6ed7bf01a9cebb9eac28e03cd23a684d81e0502797e88f3ccd27a32aeab1cfc44c39da0
-  languageName: node
-  linkType: hard
-
 "v8-to-istanbul@npm:^9.0.1":
   version: 9.0.1
   resolution: "v8-to-istanbul@npm:9.0.1"
@@ -17716,13 +17562,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"yn@npm:3.1.1":
-  version: 3.1.1
-  resolution: "yn@npm:3.1.1"
-  checksum: 2c487b0e149e746ef48cda9f8bad10fc83693cd69d7f9dcd8be4214e985de33a29c9e24f3c0d6bcf2288427040a8947406ab27f7af67ee9456e6b84854f02dd6
-  languageName: node
-  linkType: hard
-
 "yocto-queue@npm:^0.1.0":
   version: 0.1.0
   resolution: "yocto-queue@npm:0.1.0"