diff --git a/package.json b/package.json
index 3ac327c6..65b905ee 100644
--- a/package.json
+++ b/package.json
@@ -83,7 +83,7 @@
 		"prettier": "3.8.1",
 		"publint": "0.3.18",
 		"semantic-release": "25.0.3",
-		"tsdown": "0.21.2",
+		"tsdown": "0.21.3",
 		"typescript": "5.9.3",
 		"typescript-eslint": "^8.56.0",
 		"vitest": "3.2.4"
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 55afbb72..f000e5fc 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -91,8 +91,8 @@ importers:
         specifier: 25.0.3
         version: 25.0.3(typescript@5.9.3)
       tsdown:
-        specifier: 0.21.2
-        version: 0.21.2(publint@0.3.18)(typescript@5.9.3)
+        specifier: 0.21.3
+        version: 0.21.3(publint@0.3.18)(typescript@5.9.3)
       typescript:
         specifier: 5.9.3
         version: 5.9.3
@@ -3055,14 +3055,14 @@ packages:
     peerDependencies:
       typescript: '>=4.0.0'
 
-  tsdown@0.21.2:
-    resolution: {integrity: sha512-pP8eAcd1XAWjl5gjosuJs0BAuVoheUe3V8VDHx31QK7YOgXjcCMsBSyFWO3CMh/CSUkjRUzR96JtGH3WJFTExQ==}
+  tsdown@0.21.3:
+    resolution: {integrity: sha512-oKKeMC8+IgNsB+81hvF5VBsqhqL/nr0g9vse+ujbK40vv0i3ReFI6gUts7hQH7J53ylQNjMgf2Vu6n0+P/uddA==}
     engines: {node: '>=20.19.0'}
     hasBin: true
     peerDependencies:
       '@arethetypeswrong/core': ^0.18.1
-      '@tsdown/css': 0.21.2
-      '@tsdown/exe': 0.21.2
+      '@tsdown/css': 0.21.3
+      '@tsdown/exe': 0.21.3
       '@vitejs/devtools': '*'
       publint: ^0.3.0
       typescript: ^5.0.0
@@ -6219,7 +6219,7 @@ snapshots:
       picomatch: 4.0.3
       typescript: 5.9.3
 
-  tsdown@0.21.2(publint@0.3.18)(typescript@5.9.3):
+  tsdown@0.21.3(publint@0.3.18)(typescript@5.9.3):
     dependencies:
       ansis: 4.2.0
       cac: 7.0.0
@@ -6232,7 +6232,7 @@ snapshots:
       rolldown: 1.0.0-rc.9
       rolldown-plugin-dts: 0.22.5(rolldown@1.0.0-rc.9)(typescript@5.9.3)
       semver: 7.7.4
-      tinyexec: 1.0.2
+      tinyexec: 1.0.4
       tinyglobby: 0.2.15
       tree-kill: 1.2.2
       unconfig-core: 7.5.0