diff --git a/apps/oxlint/package.json b/apps/oxlint/package.json
index 51b0b488c04e2..2761a7854eeab 100644
--- a/apps/oxlint/package.json
+++ b/apps/oxlint/package.json
@@ -42,7 +42,7 @@
     "eslint": "^9.36.0",
     "execa": "^9.6.0",
     "jiti": "^2.6.0",
-    "tsdown": "0.15.1",
+    "tsdown": "^0.15.5",
     "typescript": "catalog:",
     "vitest": "catalog:"
   },
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 96f27b800ae8a..96695e0f02831 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -67,8 +67,8 @@ importers:
         specifier: ^2.6.0
         version: 2.6.0
       tsdown:
-        specifier: 0.15.1
-        version: 0.15.1(@arethetypeswrong/core@0.18.2)(publint@0.3.13)(typescript@5.9.2)
+        specifier: ^0.15.5
+        version: 0.15.5(@arethetypeswrong/core@0.18.2)(publint@0.3.13)(typescript@5.9.2)
       typescript:
         specifier: 'catalog:'
         version: 5.9.2
@@ -2185,8 +2185,8 @@ packages:
     resolution: {integrity: sha512-sXnYK/Ij80TO3lcqZVV2YgfKN5QjUWIRk/XSm2J/4bd/lPko3lvk0O4ZppH6m+6hB2/GTu+ptNwVFe1xh+QLQw==}
     engines: {node: '>=4'}
 
-  birpc@2.5.0:
-    resolution: {integrity: sha512-VSWO/W6nNQdyP520F1mhf+Lc2f8pjGQOtoHHm7Ze8Go1kX7akpVIrtTa0fn+HB0QJEDVacl6aO08YE0PgXfdnQ==}
+  birpc@2.6.1:
+    resolution: {integrity: sha512-LPnFhlDpdSH6FJhJyn4M0kFO7vtQ5iPw24FnG0y21q09xC7e8+1LeR31S1MAIrDAHp4m7aas4bEkTDTvMAtebQ==}
 
   bl@4.1.0:
     resolution: {integrity: sha512-1W07cM9gS6DcLperZfFSj+bWLtaPGSOHWhPiGzXmvVJbRLdG82sH/Kn8EtW1VqWVA54AKf2h5k5BbnIbwF3h6w==}
@@ -3713,8 +3713,8 @@ packages:
     resolution: {integrity: sha512-g6QUff04oZpHs0eG5p83rFLhHeV00ug/Yf9nZM6fLeUrPguBTkTQOdpAWWspMh55TZfVQDPaN3NQJfbVRAxdIw==}
     engines: {iojs: '>=1.0.0', node: '>=0.10.0'}
 
-  rolldown-plugin-dts@0.16.7:
-    resolution: {integrity: sha512-9iDzS4MHXMyieisFbWxuz96i/idGJNpvWILqCH06mrEZvn8Q2el3Q63xxjOt7HJjTOUNFhB1isvZFy4dA87lPQ==}
+  rolldown-plugin-dts@0.16.9:
+    resolution: {integrity: sha512-65fAQjQAAXW7j2V5/872r++jjjR2/Pur18/PQO/JgfJl3vKxapXO2KU1l5bUdRoFuuryF+23+Hfu0Cw3bhM97g==}
     engines: {node: '>=20.18.0'}
     peerDependencies:
       '@ts-macro/tsc': ^0.3.6
@@ -4038,8 +4038,8 @@ packages:
     resolution: {integrity: sha512-L0Orpi8qGpRG//Nd+H90vFB+3iHnue1zSSGmNOOCh1GLJ7rUKVwV2HvijphGQS2UmhUZewS9VgvxYIdgr+fG1A==}
     hasBin: true
 
-  tsdown@0.15.1:
-    resolution: {integrity: sha512-USTr2wS5OIyohR8Sp09rp5mXVwOX4YvVRqarS9I9jIhF+PqgtVSMXG4vBrHGY1OficNcLT5Z75pSoxd2uU+BYg==}
+  tsdown@0.15.5:
+    resolution: {integrity: sha512-2UP5hDBVYGHnnQSIYtDxMDjePmut7EDpvW5E2kVnjpZ17JgiPvRJPHwk5Dm045bC75+q8yxAlw/CMIELymTWaw==}
     engines: {node: '>=20.19.0'}
     hasBin: true
     peerDependencies:
@@ -6147,7 +6147,7 @@ snapshots:
     dependencies:
       editions: 6.22.0
 
-  birpc@2.5.0: {}
+  birpc@2.6.1: {}
 
   bl@4.1.0:
     dependencies:
@@ -7737,13 +7737,13 @@ snapshots:
 
   reusify@1.1.0: {}
 
-  rolldown-plugin-dts@0.16.7(rolldown@1.0.0-beta.40)(typescript@5.9.2):
+  rolldown-plugin-dts@0.16.9(rolldown@1.0.0-beta.40)(typescript@5.9.2):
     dependencies:
       '@babel/generator': 7.28.3
       '@babel/parser': 7.28.4
       '@babel/types': 7.28.4
       ast-kit: 2.1.2
-      birpc: 2.5.0
+      birpc: 2.6.1
       debug: 4.4.3(supports-color@8.1.1)
       dts-resolver: 2.1.2
       get-tsconfig: 4.10.1
@@ -8136,7 +8136,7 @@ snapshots:
 
   tree-kill@1.2.2: {}
 
-  tsdown@0.15.1(@arethetypeswrong/core@0.18.2)(publint@0.3.13)(typescript@5.9.2):
+  tsdown@0.15.5(@arethetypeswrong/core@0.18.2)(publint@0.3.13)(typescript@5.9.2):
     dependencies:
       ansis: 4.1.0
       cac: 6.7.14
@@ -8146,7 +8146,7 @@ snapshots:
       empathic: 2.0.0
       hookable: 5.5.3
       rolldown: 1.0.0-beta.40
-      rolldown-plugin-dts: 0.16.7(rolldown@1.0.0-beta.40)(typescript@5.9.2)
+      rolldown-plugin-dts: 0.16.9(rolldown@1.0.0-beta.40)(typescript@5.9.2)
       semver: 7.7.2
       tinyexec: 1.0.1
       tinyglobby: 0.2.15