diff --git a/package.json b/package.json
index 42797445ee..ae28c5831d 100644
--- a/package.json
+++ b/package.json
@@ -72,7 +72,7 @@
     "markdown-magic-subpackage-list": "1.1.2",
     "size-limit": "12.0.1",
     "size-limit-preset-node-lib": "0.4.0",
-    "tsdown": "0.21.3",
+    "tsdown": "0.21.4",
     "turbo": "2.8.17",
     "typedoc": "0.28.17",
     "typescript": "5.9.3",
diff --git a/packages/application/package.json b/packages/application/package.json
index efc66a6dd1..55e606f2d7 100644
--- a/packages/application/package.json
+++ b/packages/application/package.json
@@ -53,7 +53,7 @@
   },
   "devDependencies": {
     "@w5s/tsdown-config": "1.0.0-alpha.4",
-    "tsdown": "0.21.3",
+    "tsdown": "0.21.4",
     "typescript": "5.9.3",
     "vitest": "latest"
   },
diff --git a/packages/console/package.json b/packages/console/package.json
index 0131d11ae3..f6ea3bc9f8 100644
--- a/packages/console/package.json
+++ b/packages/console/package.json
@@ -54,7 +54,7 @@
   },
   "devDependencies": {
     "@w5s/tsdown-config": "1.0.0-alpha.4",
-    "tsdown": "0.21.3",
+    "tsdown": "0.21.4",
     "typescript": "5.9.3",
     "vitest": "latest"
   },
diff --git a/packages/core-type/package.json b/packages/core-type/package.json
index b7110ebb58..3664281362 100644
--- a/packages/core-type/package.json
+++ b/packages/core-type/package.json
@@ -57,7 +57,7 @@
   },
   "devDependencies": {
     "@w5s/tsdown-config": "1.0.0-alpha.4",
-    "tsdown": "0.21.3",
+    "tsdown": "0.21.4",
     "typescript": "5.9.3",
     "vitest": "latest"
   },
diff --git a/packages/global-storage/package.json b/packages/global-storage/package.json
index 05d1cefb8a..feddb4fb7e 100644
--- a/packages/global-storage/package.json
+++ b/packages/global-storage/package.json
@@ -53,7 +53,7 @@
   },
   "devDependencies": {
     "@w5s/tsdown-config": "1.0.0-alpha.4",
-    "tsdown": "0.21.3",
+    "tsdown": "0.21.4",
     "typescript": "5.9.3",
     "vitest": "latest"
   },
diff --git a/packages/object-id/package.json b/packages/object-id/package.json
index 89fd851835..7474f1f92b 100644
--- a/packages/object-id/package.json
+++ b/packages/object-id/package.json
@@ -55,7 +55,7 @@
   },
   "devDependencies": {
     "@w5s/tsdown-config": "1.0.0-alpha.4",
-    "tsdown": "0.21.3",
+    "tsdown": "0.21.4",
     "typescript": "5.9.3",
     "vitest": "latest"
   },
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index a217668f7a..510987af70 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -57,8 +57,8 @@ importers:
         specifier: 0.4.0
         version: 0.4.0(size-limit@12.0.1(jiti@2.6.1))
       tsdown:
-        specifier: 0.21.3
-        version: 0.21.3(synckit@0.11.12)(typescript@5.9.3)
+        specifier: 0.21.4
+        version: 0.21.4(synckit@0.11.12)(typescript@5.9.3)
       turbo:
         specifier: 2.8.17
         version: 2.8.17
@@ -126,10 +126,10 @@ importers:
     devDependencies:
       '@w5s/tsdown-config':
         specifier: 1.0.0-alpha.4
-        version: 1.0.0-alpha.4(tsdown@0.21.3(synckit@0.11.12)(typescript@5.9.3))
+        version: 1.0.0-alpha.4(tsdown@0.21.4(synckit@0.11.12)(typescript@5.9.3))
       tsdown:
-        specifier: 0.21.3
-        version: 0.21.3(synckit@0.11.12)(typescript@5.9.3)
+        specifier: 0.21.4
+        version: 0.21.4(synckit@0.11.12)(typescript@5.9.3)
       typescript:
         specifier: 5.9.3
         version: 5.9.3
@@ -218,10 +218,10 @@ importers:
     devDependencies:
       '@w5s/tsdown-config':
         specifier: 1.0.0-alpha.4
-        version: 1.0.0-alpha.4(tsdown@0.21.3(synckit@0.11.12)(typescript@5.9.3))
+        version: 1.0.0-alpha.4(tsdown@0.21.4(synckit@0.11.12)(typescript@5.9.3))
       tsdown:
-        specifier: 0.21.3
-        version: 0.21.3(synckit@0.11.12)(typescript@5.9.3)
+        specifier: 0.21.4
+        version: 0.21.4(synckit@0.11.12)(typescript@5.9.3)
       typescript:
         specifier: 5.9.3
         version: 5.9.3
@@ -252,10 +252,10 @@ importers:
     devDependencies:
       '@w5s/tsdown-config':
         specifier: 1.0.0-alpha.4
-        version: 1.0.0-alpha.4(tsdown@0.21.3(synckit@0.11.12)(typescript@5.9.3))
+        version: 1.0.0-alpha.4(tsdown@0.21.4(synckit@0.11.12)(typescript@5.9.3))
       tsdown:
-        specifier: 0.21.3
-        version: 0.21.3(synckit@0.11.12)(typescript@5.9.3)
+        specifier: 0.21.4
+        version: 0.21.4(synckit@0.11.12)(typescript@5.9.3)
       typescript:
         specifier: 5.9.3
         version: 5.9.3
@@ -327,10 +327,10 @@ importers:
     devDependencies:
       '@w5s/tsdown-config':
         specifier: 1.0.0-alpha.4
-        version: 1.0.0-alpha.4(tsdown@0.21.3(synckit@0.11.12)(typescript@5.9.3))
+        version: 1.0.0-alpha.4(tsdown@0.21.4(synckit@0.11.12)(typescript@5.9.3))
       tsdown:
-        specifier: 0.21.3
-        version: 0.21.3(synckit@0.11.12)(typescript@5.9.3)
+        specifier: 0.21.4
+        version: 0.21.4(synckit@0.11.12)(typescript@5.9.3)
       typescript:
         specifier: 5.9.3
         version: 5.9.3
@@ -480,10 +480,10 @@ importers:
     devDependencies:
       '@w5s/tsdown-config':
         specifier: 1.0.0-alpha.4
-        version: 1.0.0-alpha.4(tsdown@0.21.3(synckit@0.11.12)(typescript@5.9.3))
+        version: 1.0.0-alpha.4(tsdown@0.21.4(synckit@0.11.12)(typescript@5.9.3))
       tsdown:
-        specifier: 0.21.3
-        version: 0.21.3(synckit@0.11.12)(typescript@5.9.3)
+        specifier: 0.21.4
+        version: 0.21.4(synckit@0.11.12)(typescript@5.9.3)
       typescript:
         specifier: 5.9.3
         version: 5.9.3
@@ -8622,14 +8622,14 @@ packages:
   tsconfig-paths@3.15.0:
     resolution: {integrity: sha512-2Ac2RgzDe/cn48GvOe3M+o82pEFewD3UPbyoUHHdKasHwJKjds4fLXWf/Ux5kATBKN20oaFGu+jbElp1pos0mg==}
 
-  tsdown@0.21.3:
-    resolution: {integrity: sha512-oKKeMC8+IgNsB+81hvF5VBsqhqL/nr0g9vse+ujbK40vv0i3ReFI6gUts7hQH7J53ylQNjMgf2Vu6n0+P/uddA==}
+  tsdown@0.21.4:
+    resolution: {integrity: sha512-Q/kBi8SXkr4X6JI/NAZKZY1UuiEcbuXtIskL4tZCsgpDiEPM/2W6lC+OonNA31S+V3KsWedFvbFDBs23hvt+Aw==}
     engines: {node: '>=20.19.0'}
     hasBin: true
     peerDependencies:
       '@arethetypeswrong/core': ^0.18.1
-      '@tsdown/css': 0.21.3
-      '@tsdown/exe': 0.21.3
+      '@tsdown/css': 0.21.4
+      '@tsdown/exe': 0.21.4
       '@vitejs/devtools': '*'
       publint: ^0.3.0
       typescript: ^5.0.0
@@ -13175,9 +13175,9 @@ snapshots:
     optionalDependencies:
       typescript: 5.9.3
 
-  '@w5s/tsdown-config@1.0.0-alpha.4(tsdown@0.21.3(synckit@0.11.12)(typescript@5.9.3))':
+  '@w5s/tsdown-config@1.0.0-alpha.4(tsdown@0.21.4(synckit@0.11.12)(typescript@5.9.3))':
     optionalDependencies:
-      tsdown: 0.21.3(synckit@0.11.12)(typescript@5.9.3)
+      tsdown: 0.21.4(synckit@0.11.12)(typescript@5.9.3)
 
   '@webassemblyjs/ast@1.14.1':
     dependencies:
@@ -19215,7 +19215,7 @@ snapshots:
       minimist: 1.2.8
       strip-bom: 3.0.0
 
-  tsdown@0.21.3(synckit@0.11.12)(typescript@5.9.3):
+  tsdown@0.21.4(synckit@0.11.12)(typescript@5.9.3):
     dependencies:
       ansis: 4.2.0
       cac: 7.0.0