diff --git a/Cargo.lock b/Cargo.lock
index fa05c16f..3c6e86cd 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -180,7 +180,7 @@ version = "1.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "40c48f72fd53cd289104fc64099abca73db4166ad86ea0b4341abe65af83dadc"
 dependencies = [
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -191,7 +191,7 @@ checksum = "291e6a250ff86cd4a820112fb8898808a366d8f9f58ce16d1f538353ad55747d"
 dependencies = [
  "anstyle",
  "once_cell_polyfill",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -1482,7 +1482,7 @@ dependencies = [
  "libc",
  "option-ext",
  "redox_users",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -1715,7 +1715,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "39cab71617ae0d63f51a36d69f866391735b51691dbda63cf6f96d042b63efeb"
 dependencies = [
  "libc",
- "windows-sys 0.52.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -3319,9 +3319,9 @@ checksum = "7ebb8d8732c6a6df3d8f032a82911cfc747e00efb95cc46e8d0acd5b5b88570c"
 
 [[package]]
 name = "mdns-sd"
-version = "0.20.3"
+version = "0.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "86dbb9f00c8c367f75ed3a775d3eb31d0375a72f58275ef64a1bc53c255a2ce2"
+checksum = "ba97b4c886eea3c2823388120d92063c011ac866919ffc4200a0e4b1642a54a5"
 dependencies = [
  "fastrand",
  "flume 0.12.0",
@@ -3522,7 +3522,7 @@ version = "0.50.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7957b9740744892f114936ab4a57b3f487491bbeafaf8083688b16841a4240e5"
 dependencies = [
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -4781,7 +4781,7 @@ dependencies = [
  "errno",
  "libc",
  "linux-raw-sys",
- "windows-sys 0.52.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -4838,7 +4838,7 @@ dependencies = [
  "security-framework",
  "security-framework-sys",
  "webpki-root-certs",
- "windows-sys 0.52.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -5422,7 +5422,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3a766e1110788c36f4fa1c2b71b387a7815aa65f88ce0229841826633d93723e"
 dependencies = [
  "libc",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -6032,7 +6032,7 @@ dependencies = [
  "getrandom 0.4.2",
  "once_cell",
  "rustix",
- "windows-sys 0.52.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -7090,7 +7090,7 @@ version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c2a7b1c03c876122aa43f3020e6c3c3ee5c05081c9a00739faf7503aeba10d22"
 dependencies = [
- "windows-sys 0.48.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index 82b68f62..1f2694dd 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -160,7 +160,7 @@ rustls = { version = "0.23", default-features = false, features = [
 rcgen           = { version = "0.14", features = ["pem"] }
 
 # ── mDNS discovery ────────────────────────────────────────────────────────────
-mdns-sd         = "0.20"
+mdns-sd         = "0.21"
 
 # ── Crypto utilities ──────────────────────────────────────────────────────────
 # NOTE: md5 is mandated by the Last.fm API signature protocol, not a security choice.