diff --git a/Cargo.lock b/Cargo.lock
index 407b281..b852626 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1857,11 +1857,11 @@ checksum = "19f132c84eca552bf34cab8ec81f1c1dcc229b811638f9d283dceabe58c5569e"
 
 [[package]]
 name = "png"
-version = "0.17.16"
+version = "0.18.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "82151a2fc869e011c153adc57cf2789ccb8d9906ce52c0b39a6b5697749d7526"
+checksum = "60769b8b31b2a9f263dae2776c37b1b28ae246943cf719eb6946a1db05128a61"
 dependencies = [
- "bitflags 1.3.2",
+ "bitflags 2.13.0",
  "crc32fast",
  "fdeflate",
  "flate2",
diff --git a/crates/whp-helper/Cargo.toml b/crates/whp-helper/Cargo.toml
index 5d8293b..0202e21 100644
--- a/crates/whp-helper/Cargo.toml
+++ b/crates/whp-helper/Cargo.toml
@@ -20,7 +20,7 @@ tempfile = "3.27.0"
 [target."cfg(windows)".dependencies]
 # 剪貼簿圖片：CF_DIB ↔ PNG 轉換（純 Rust，無 C 依賴，符合單檔精神）。與現代（PNG 格式）
 # 及傳統（CF_DIB：小畫家/剪取工具/PowerShell）Windows app 互通。
-png = "0.17"
+png = "0.18"
 windows-sys = { version = "0.61", features = [
     "Win32_Foundation",
     "Win32_System_LibraryLoader",