diff --git a/agent/Cargo.toml b/agent/Cargo.toml
index e6429bf..54720bc 100644
--- a/agent/Cargo.toml
+++ b/agent/Cargo.toml
@@ -51,6 +51,10 @@ anyhow = "1"
 # HTTP client (for REST API session creation)
 reqwest = { version = "0.12", default-features = false, features = ["json", "rustls-tls"] }
 
+# Windows service support (only compiled on Windows)
+[target.'cfg(windows)'.dependencies]
+windows-service = "0.7"
+
 [profile.release]
 opt-level = 3
 lto = true