diff --git a/src/packages/migrate/package.json b/src/packages/migrate/package.json
index 44d7bf7705a1..9f44104ea4fd 100644
--- a/src/packages/migrate/package.json
+++ b/src/packages/migrate/package.json
@@ -71,7 +71,6 @@
     "strip-indent": "^3.0.0"
   },
   "scripts": {
-    "postinstall": "cd src/__tests__/fixtures/seed-sqlite && npm i && cd ../seed-sqlite-js-ts-default-export && npm i && cd ../seed-sqlite-js-ts-named-export && npm i",
     "run": "node dist/bin.js",
     "precommit": "lint-staged",
     "format": "prettier --write .",
diff --git a/src/packages/migrate/src/utils/seed.ts b/src/packages/migrate/src/utils/seed.ts
index 146084919e5f..4ec828f06790 100644
--- a/src/packages/migrate/src/utils/seed.ts
+++ b/src/packages/migrate/src/utils/seed.ts
@@ -68,20 +68,28 @@ export function detectSeedFiles(schemaPath) {
 }
 
 function getSeedScript(type: 'TS' | 'JS', seedFilepath: string) {
-  const script = `
-  const __seed = require('./${seedFilepath}')
-  const __keys = Object.keys(__seed)
-
-  // Execute default or "seed" named export
-  if (__keys && __keys.length) {
-    if (__keys.indexOf('seed') !== -1) {
-      __seed.seed()
-    } else if (__keys.indexOf('default') !== -1) {
-      __seed.default()
-    }
-  } else {
-    ''
-  }`
+  let script = `
+const __seed = require('./${seedFilepath}')
+const __keys = Object.keys(__seed)
+
+// Execute "seed" named export or default export
+if (__keys && __keys.length) {
+  if (__keys.indexOf('seed') !== -1) {
+    __seed.seed()
+  } else if (__keys.indexOf('default') !== -1) {
+    __seed.default()
+  }
+} else {
+  ''
+}`
+
+  if (type === 'TS') {
+    script = `
+// @ts-ignore
+declare const require: any
+
+${script}`
+  }
 
   return script
 }