diff --git a/crates/obs/Cargo.toml b/crates/obs/Cargo.toml
index 03aa44b81..7a00bc879 100644
--- a/crates/obs/Cargo.toml
+++ b/crates/obs/Cargo.toml
@@ -56,7 +56,7 @@ dial9-tokio-telemetry = { workspace = true }
 thiserror = { workspace = true }
 zstd = { workspace = true, features = ["zstdmt"] }
 
-[target.'cfg(unix)'.dependencies]
+[target.'cfg(any(target_os = "linux", target_os = "macos"))'.dependencies]
 pyroscope = { workspace = true, features = ["backend-pprof-rs"] }
 
 
diff --git a/crates/obs/src/telemetry/guard.rs b/crates/obs/src/telemetry/guard.rs
index f91d25ce7..26c868d50 100644
--- a/crates/obs/src/telemetry/guard.rs
+++ b/crates/obs/src/telemetry/guard.rs
@@ -41,7 +41,7 @@ pub struct OtelGuard {
     pub(crate) meter_provider: Option<SdkMeterProvider>,
     /// Optional logger provider for OTLP log export.
     pub(crate) logger_provider: Option<SdkLoggerProvider>,
-    #[cfg(unix)]
+    #[cfg(any(target_os = "linux", target_os = "macos"))]
     pub(crate) profiling_agent: Option<pyroscope::PyroscopeAgent<pyroscope::pyroscope::PyroscopeAgentRunning>>,
     /// Handle to the background log-cleanup task; aborted on drop.
     pub(crate) cleanup_handle: Option<tokio::task::JoinHandle<()>>,
@@ -58,7 +58,7 @@ impl std::fmt::Debug for OtelGuard {
         s.field("tracer_provider", &self.tracer_provider.is_some())
             .field("meter_provider", &self.meter_provider.is_some())
             .field("logger_provider", &self.logger_provider.is_some());
-        #[cfg(unix)]
+        #[cfg(any(target_os = "linux", target_os = "macos"))]
         s.field("profiling_agent", &self.profiling_agent.is_some());
         s.field("cleanup_handle", &self.cleanup_handle.is_some())
             .field("tracing_guard", &self.tracing_guard.is_some())
@@ -91,7 +91,7 @@ impl Drop for OtelGuard {
             eprintln!("Logger shutdown error: {err:?}");
         }
 
-        #[cfg(unix)]
+        #[cfg(any(target_os = "linux", target_os = "macos"))]
         if let Some(agent) = self.profiling_agent.take() {
             match agent.stop() {
                 Err(err) => eprintln!("Profiling agent stop error: {err:?}"),
diff --git a/crates/obs/src/telemetry/local.rs b/crates/obs/src/telemetry/local.rs
index c7d8cedf6..b73d3ac23 100644
--- a/crates/obs/src/telemetry/local.rs
+++ b/crates/obs/src/telemetry/local.rs
@@ -155,7 +155,7 @@ fn init_stdout_only(_config: &OtelConfig, logger_level: &str, is_production: boo
         tracer_provider: None,
         meter_provider: None,
         logger_provider: None,
-        #[cfg(unix)]
+        #[cfg(any(target_os = "linux", target_os = "macos"))]
         profiling_agent: None,
         tracing_guard: Some(guard),
         stdout_guard: None,
@@ -289,7 +289,7 @@ fn init_file_logging_internal(
         tracer_provider: None,
         meter_provider: None,
         logger_provider: None,
-        #[cfg(unix)]
+        #[cfg(any(target_os = "linux", target_os = "macos"))]
         profiling_agent: None,
         tracing_guard: Some(guard),
         stdout_guard,
diff --git a/crates/obs/src/telemetry/otel.rs b/crates/obs/src/telemetry/otel.rs
index 3d4320356..736dc0dcd 100644
--- a/crates/obs/src/telemetry/otel.rs
+++ b/crates/obs/src/telemetry/otel.rs
@@ -162,7 +162,7 @@ pub(super) fn init_observability_http(
     // ── Meter provider (HTTP) ─────────────────────────────────────────────────
     let meter_provider = build_meter_provider(&metric_ep, config, res.clone(), &service_name, use_stdout)?;
 
-    #[cfg(unix)]
+    #[cfg(any(target_os = "linux", target_os = "macos"))]
     let profiling_agent = init_profiler(config);
 
     // ── Logger Logic ──────────────────────────────────────────────────────────
@@ -205,7 +205,7 @@ pub(super) fn init_observability_http(
         let file_logging_result = (|| -> Result<_, TelemetryError> {
             fs::create_dir_all(log_directory).map_err(|e| TelemetryError::Io(e.to_string()))?;
 
-            #[cfg(unix)]
+            #[cfg(any(target_os = "linux", target_os = "macos"))]
             crate::telemetry::local::ensure_dir_permissions(log_directory)?;
 
             let rotation_str = config
@@ -312,7 +312,7 @@ pub(super) fn init_observability_http(
         tracer_provider,
         meter_provider,
         logger_provider,
-        #[cfg(unix)]
+        #[cfg(any(target_os = "linux", target_os = "macos"))]
         profiling_agent,
         tracing_guard,
         stdout_guard,
@@ -462,9 +462,10 @@ fn build_logger_provider(
 
 /// Start the Pyroscope continuous profiling agent when profiling is enabled.
 ///
-/// Returns `None` on non-Unix platforms, when the feature is disabled, or when
-/// no usable profiling endpoint is configured.
-#[cfg(unix)]
+/// Returns `None` when profiling export is disabled, when no usable
+/// profiling endpoint is configured, or when building or starting the agent
+/// fails.
+#[cfg(any(target_os = "linux", target_os = "macos"))]
 fn init_profiler(config: &OtelConfig) -> Option<pyroscope::PyroscopeAgent<pyroscope::pyroscope::PyroscopeAgentRunning>> {
     use pyroscope::backend::{BackendConfig, PprofConfig, pprof_backend};
     use pyroscope::pyroscope::PyroscopeAgentBuilder;