diff --git a/Cargo.lock b/Cargo.lock
index 7b6d3172..7635327f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4285,9 +4285,9 @@ checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
 
 [[package]]
 name = "sd-notify"
-version = "0.4.5"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b943eadf71d8b69e661330cb0e2656e31040acf21ee7708e2c238a0ec6af2bf4"
+checksum = "3e4ef7359e694bfaf1dd27a30f9d760b54c00dfae9f19bd0c05a39bc9128fe76"
 dependencies = [
  "libc",
 ]
diff --git a/crates/harmonia-host/Cargo.toml b/crates/harmonia-host/Cargo.toml
index 9378142d..8ddee5c1 100644
--- a/crates/harmonia-host/Cargo.toml
+++ b/crates/harmonia-host/Cargo.toml
@@ -51,7 +51,7 @@ mdns-sd.workspace = true
 toml.workspace = true
 jiff.workspace = true
 # WHY: sd-notify cannot be a workspace dep — workspace deps cannot be optional.
-sd-notify = { version = "0.4", optional = true }
+sd-notify = { version = "0.5", optional = true }
 
 [dev-dependencies]
 rstest.workspace = true