diff --git a/packages/backend/.swcrc b/packages/backend/.swcrc
index 0504a2d389..d9f047b6ac 100644
--- a/packages/backend/.swcrc
+++ b/packages/backend/.swcrc
@@ -11,7 +11,7 @@
 			"decoratorMetadata": true
 		},
 		"experimental": {
-			"keepImportAssertions": true
+			"keepImportAttributes": true
 		},
 		"baseUrl": "src",
 		"paths": {
diff --git a/packages/misskey-js/.swcrc b/packages/misskey-js/.swcrc
index 0504a2d389..d9f047b6ac 100644
--- a/packages/misskey-js/.swcrc
+++ b/packages/misskey-js/.swcrc
@@ -11,7 +11,7 @@
 			"decoratorMetadata": true
 		},
 		"experimental": {
-			"keepImportAssertions": true
+			"keepImportAttributes": true
 		},
 		"baseUrl": "src",
 		"paths": {