diff --git a/package.json b/package.json
index 8eaee505..f64962fd 100644
--- a/package.json
+++ b/package.json
@@ -136,7 +136,7 @@
     "simple-git-hooks": "^2.13.1",
     "svelte": "^5.39.6",
     "svelte-eslint-parser": "^1.3.3",
-    "tsdown": "^0.15.5",
+    "tsdown": "^0.15.6",
     "typescript": "^5.9.2",
     "unplugin-unused": "^0.5.3"
   },
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 36e39a26..772baee5 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -166,8 +166,8 @@ importers:
         specifier: ^1.3.3
         version: 1.3.3(svelte@5.39.6)
       tsdown:
-        specifier: ^0.15.5
-        version: 0.15.5(publint@0.3.13)(typescript@5.9.2)(unplugin-unused@0.5.3)
+        specifier: ^0.15.6
+        version: 0.15.6(publint@0.3.13)(typescript@5.9.2)(unplugin-unused@0.5.3)
       typescript:
         specifier: ^5.9.2
         version: 5.9.2
@@ -2699,8 +2699,8 @@ packages:
   ts-pattern@5.8.0:
     resolution: {integrity: sha512-kIjN2qmWiHnhgr5DAkAafF9fwb0T5OhMVSWrm8XEdTFnX6+wfXwYOFjeF86UZ54vduqiR7BfqScFmXSzSaH8oA==}
 
-  tsdown@0.15.5:
-    resolution: {integrity: sha512-2UP5hDBVYGHnnQSIYtDxMDjePmut7EDpvW5E2kVnjpZ17JgiPvRJPHwk5Dm045bC75+q8yxAlw/CMIELymTWaw==}
+  tsdown@0.15.6:
+    resolution: {integrity: sha512-W6++O3JeV9gm3JY6P/vLiC7zzTcJbZhQxXb+p3AvRMpDOPBIg82yXULyZCcwjsihY/bFG+Qw37HkezZbP7fzUg==}
     engines: {node: '>=20.19.0'}
     hasBin: true
     peerDependencies:
@@ -5547,7 +5547,7 @@ snapshots:
 
   ts-pattern@5.8.0: {}
 
-  tsdown@0.15.5(publint@0.3.13)(typescript@5.9.2)(unplugin-unused@0.5.3):
+  tsdown@0.15.6(publint@0.3.13)(typescript@5.9.2)(unplugin-unused@0.5.3):
     dependencies:
       ansis: 4.2.0
       cac: 6.7.14