diff --git a/actor-example/firmware/Cargo.toml b/actor-example/firmware/Cargo.toml
index 52bc0e8834..119a3bd957 100644
--- a/actor-example/firmware/Cargo.toml
+++ b/actor-example/firmware/Cargo.toml
@@ -8,12 +8,12 @@ actors = { path = "../actors" }
 cortex-m = "0.7.1"
 cortex-m-rt = "0.6.13"
 cortex-m-rtic = { path = "../.." }
-defmt = "0.2.0"
-defmt-rtt = "0.2.0"
+defmt = "0.3.0"
+defmt-rtt = "0.3.1"
 nrf52840-hal = "0.12.2"
-panic-probe = { version = "0.2.0", features = ["print-defmt"] }
+panic-probe = { version = "0.3.0", features = ["print-defmt"] }
 rtic-actor-traits = { path = "../../actor-traits" }
-systick-monotonic = "0.1.0-alpha.0"
+systick-monotonic = "1"
 
 [features]
 # set logging levels here
diff --git a/actor-example/firmware/src/bin/temperature-monitor.rs b/actor-example/firmware/src/bin/temperature-monitor.rs
index 69b0d5d8c2..6636d5828e 100644
--- a/actor-example/firmware/src/bin/temperature-monitor.rs
+++ b/actor-example/firmware/src/bin/temperature-monitor.rs
@@ -8,9 +8,8 @@ mod app {
     use actors::{
         FakeTemperatureSensor, TemperatureAlert, TemperatureMonitor, TemperatureReadingCelsius,
     };
-    use rtic::time::duration::*;
     use rtic_actor_traits::Receive;
-    use systick_monotonic::Systick;
+    use systick_monotonic::*;
 
     // configuration
     const TEMPERATURE_THRESHOLD: i32 = 37;
@@ -31,7 +30,7 @@ mod app {
 
     impl Receive<TemperatureReadingCelsius> for TemperatureTracer {
         fn receive(&mut self, reading: TemperatureReadingCelsius) {
-            defmt::trace!("temperature: {} C", reading.0);
+            defmt::println!("temperature: {} C", reading.0);
         }
     }
 
@@ -83,7 +82,7 @@ mod app {
     #[task(local = [temperature_sensor])]
     fn periodic(cx: periodic::Context) {
         cx.local.temperature_sensor.read();
-        periodic::spawn_after(1.seconds()).expect("OOM");
+        periodic::spawn_after(1.secs()).expect("OOM");
     }
 
     #[shared]