diff --git a/packages/backend/jest.config.ts b/packages/backend/jest.config.ts
index b53836ca3a..babeca4ad8 100644
--- a/packages/backend/jest.config.ts
+++ b/packages/backend/jest.config.ts
@@ -91,7 +91,7 @@ export default {
 		// See https://github.com/swc-project/jest/issues/64#issuecomment-1029753225
 		// TODO: Use `--allowImportingTsExtensions` on TypeScript 5.0 so that we can
 		// directly import `.ts` files without this hack.
-		'^((?:\\.{1,2}|[A-Z:])*/.*)\\.js$': '$1',
+		'^(\\.{1,2}[\\/\\\\].*)\\.js$': '$1',
 	},
 
 	// An array of regexp pattern strings, matched against all module paths before considered 'visible' to the module loader
diff --git a/packages/megalodon/jest.config.ts b/packages/megalodon/jest.config.ts
index fae4d82b6e..64504bc112 100644
--- a/packages/megalodon/jest.config.ts
+++ b/packages/megalodon/jest.config.ts
@@ -104,7 +104,7 @@ export default {
 		// See https://github.com/swc-project/jest/issues/64#issuecomment-1029753225
 		// TODO: Use `--allowImportingTsExtensions` on TypeScript 5.0 so that we can
 		// directly import `.ts` files without this hack.
-		'^((?:\\.{1,2}|[A-Z:])*/.*)\\.js$': '$1',
+		'^(\\.{1,2}[\\/\\\\].*)\\.js$': '$1',
 	},
 
 	// An array of regexp pattern strings, matched against all module paths before considered 'visible' to the module loader
diff --git a/packages/misskey-js/jest.config.ts b/packages/misskey-js/jest.config.ts
index b12801c5d2..953ce215bf 100644
--- a/packages/misskey-js/jest.config.ts
+++ b/packages/misskey-js/jest.config.ts
@@ -104,7 +104,7 @@ export default {
 		// See https://github.com/swc-project/jest/issues/64#issuecomment-1029753225
 		// TODO: Use `--allowImportingTsExtensions` on TypeScript 5.0 so that we can
 		// directly import `.ts` files without this hack.
-		'^((?:\\.{1,2}|[A-Z:])*/.*)\\.js$': '$1',
+		'^(\\.{1,2}[\\/\\\\].*)\\.js$': '$1',
 	},
 
 	// An array of regexp pattern strings, matched against all module paths before considered 'visible' to the module loader