diff --git a/crates/hue/src/api/grouped_light.rs b/crates/hue/src/api/grouped_light.rs
index 73bc1301..6dee0b56 100644
--- a/crates/hue/src/api/grouped_light.rs
+++ b/crates/hue/src/api/grouped_light.rs
@@ -47,6 +47,27 @@ impl GroupedLight {
     }
 }
 
+#[derive(Debug, Default, Serialize, Deserialize, Clone)]
+pub struct GroupedLightDynamicsUpdate {
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub duration: Option<u32>,
+}
+
+impl GroupedLightDynamicsUpdate {
+    #[must_use]
+    pub fn new() -> Self {
+        Self::default()
+    }
+
+    #[must_use]
+    pub fn with_duration(self, duration: Option<impl Into<u32>>) -> Self {
+        Self {
+            duration: duration.map(Into::into),
+            ..self
+        }
+    }
+}
+
 #[derive(Debug, Serialize, Deserialize, Clone, Default)]
 pub struct GroupedLightUpdate {
     #[serde(skip_serializing_if = "Option::is_none")]
@@ -59,6 +80,8 @@ pub struct GroupedLightUpdate {
     pub color_temperature: Option<ColorTemperatureUpdate>,
     #[serde(skip_serializing_if = "Option::is_none")]
     pub owner: Option<ResourceLink>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub dynamics: Option<GroupedLightDynamicsUpdate>,
 }
 
 impl GroupedLightUpdate {
@@ -103,6 +126,11 @@ impl GroupedLightUpdate {
             ..self
         }
     }
+
+    #[must_use]
+    pub const fn with_dynamics(self, dynamics: Option<GroupedLightDynamicsUpdate>) -> Self {
+        Self { dynamics, ..self }
+    }
 }
 
 /* conversion from v1 api */
@@ -113,5 +141,9 @@ impl From<&ApiLightStateUpdate> for GroupedLightUpdate {
             .with_brightness(upd.bri.map(|b| f64::from(b) / 2.54))
             .with_color_xy(upd.xy.map(XY::from))
             .with_color_temperature(upd.ct)
+            .with_dynamics(
+                upd.transitiontime
+                    .map(|t| GroupedLightDynamicsUpdate::new().with_duration(Some(t * 100))),
+            )
     }
 }
diff --git a/crates/hue/src/api/light.rs b/crates/hue/src/api/light.rs
index 2ccdb691..93268069 100644
--- a/crates/hue/src/api/light.rs
+++ b/crates/hue/src/api/light.rs
@@ -449,16 +449,27 @@ pub struct LightDynamics {
     pub speed_valid: bool,
 }
 
-#[derive(Debug, Serialize, Deserialize, Clone)]
+#[derive(Debug, Serialize, Deserialize, Clone, Default)]
 pub struct LightDynamicsUpdate {
-    #[serde(skip_serializing_if = "Option::is_none")]
-    pub status: Option<LightDynamicsStatus>,
-    #[serde(skip_serializing_if = "Option::is_none")]
-    pub status_values: Option<Vec<LightDynamicsStatus>>,
     #[serde(skip_serializing_if = "Option::is_none")]
     pub speed: Option<f64>,
     #[serde(skip_serializing_if = "Option::is_none")]
-    pub speed_valid: Option<bool>,
+    pub duration: Option<u32>,
+}
+
+impl LightDynamicsUpdate {
+    #[must_use]
+    pub fn new() -> Self {
+        Self::default()
+    }
+
+    #[must_use]
+    pub fn with_duration(self, duration: Option<impl Into<u32>>) -> Self {
+        Self {
+            duration: duration.map(Into::into),
+            ..self
+        }
+    }
 }
 
 impl Default for LightDynamics {
@@ -688,6 +699,11 @@ impl LightUpdate {
     pub fn with_gradient(self, gradient: Option<LightGradientUpdate>) -> Self {
         Self { gradient, ..self }
     }
+
+    #[must_use]
+    pub fn with_dynamics(self, dynamics: Option<LightDynamicsUpdate>) -> Self {
+        Self { dynamics, ..self }
+    }
 }
 
 impl From<&ApiLightStateUpdate> for LightUpdate {
@@ -698,6 +714,10 @@ impl From<&ApiLightStateUpdate> for LightUpdate {
             .with_color_temperature(upd.ct)
             .with_color_hs(upd.hs.map(Into::into))
             .with_color_xy(upd.xy.map(Into::into))
+            .with_dynamics(
+                upd.transitiontime
+                    .map(|t| LightDynamicsUpdate::new().with_duration(Some(t * 100))),
+            )
     }
 }
 
diff --git a/crates/hue/src/api/mod.rs b/crates/hue/src/api/mod.rs
index 7edf737a..81a30b24 100644
--- a/crates/hue/src/api/mod.rs
+++ b/crates/hue/src/api/mod.rs
@@ -382,7 +382,8 @@ impl<'a> V1Reply<'a> {
         self.add_option("on", upd.on)?
             .add_option("bri", upd.bri)?
             .add_option("xy", upd.xy)?
-            .add_option("ct", upd.ct)
+            .add_option("ct", upd.ct)?
+            .add_option("transitiontime", upd.transitiontime)
     }
 
     pub fn add<T: Serialize>(mut self, name: &'a str, value: T) -> HueResult<Self> {
diff --git a/crates/hue/src/legacy_api.rs b/crates/hue/src/legacy_api.rs
index dce7b632..4a892544 100644
--- a/crates/hue/src/legacy_api.rs
+++ b/crates/hue/src/legacy_api.rs
@@ -484,6 +484,8 @@ pub struct ApiLightStateUpdate {
     pub ct: Option<u16>,
     #[serde(skip_serializing_if = "Option::is_none", flatten)]
     pub hs: Option<RawHS>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub transitiontime: Option<u16>,
 }
 
 #[derive(Debug, Serialize, Deserialize)]
@@ -519,6 +521,7 @@ impl From<api::SceneAction> for ApiLightStateUpdate {
             xy: action.color.map(|col| col.xy.into()),
             ct: action.color_temperature.and_then(|ct| ct.mirek),
             hs: None,
+            transitiontime: None,
         }
     }
 }
diff --git a/crates/z2m/src/convert.rs b/crates/z2m/src/convert.rs
index 22252c85..daf245f3 100644
--- a/crates/z2m/src/convert.rs
+++ b/crates/z2m/src/convert.rs
@@ -190,5 +190,10 @@ impl From<&GroupedLightUpdate> for DeviceUpdate {
             .with_brightness(upd.dimming.map(|dim| dim.brightness / 100.0 * 254.0))
             .with_color_temp(upd.color_temperature.and_then(|ct| ct.mirek))
             .with_color_xy(upd.color.map(|col| col.xy))
+            .with_transition(
+                upd.dynamics
+                    .as_ref()
+                    .and_then(|d| d.duration.map(|duration| f64::from(duration) / 1000.0)),
+            )
     }
 }
diff --git a/crates/z2m/src/update.rs b/crates/z2m/src/update.rs
index 7c8d768a..58d08ba8 100644
--- a/crates/z2m/src/update.rs
+++ b/crates/z2m/src/update.rs
@@ -122,6 +122,11 @@ impl DeviceUpdate {
             ..self
         }
     }
+
+    #[must_use]
+    pub fn with_transition(self, transition: Option<f64>) -> Self {
+        Self { transition, ..self }
+    }
 }
 
 #[derive(Copy, Debug, Serialize, Deserialize, Clone)]
diff --git a/src/backend/z2m/backend_event.rs b/src/backend/z2m/backend_event.rs
index 8fe44076..28a82336 100644
--- a/src/backend/z2m/backend_event.rs
+++ b/src/backend/z2m/backend_event.rs
@@ -92,11 +92,23 @@ impl Z2mBackend {
         drop(lock);
 
         /* step 1: send generic light update */
+        let transition = upd
+            .dynamics
+            .as_ref()
+            .and_then(|d| d.duration.map(|duration| f64::from(duration) / 1000.0))
+            .or_else(|| {
+                if upd.dimming.is_some() || upd.color_temperature.is_some() || upd.color.is_some() {
+                    Some(0.4)
+                } else {
+                    None
+                }
+            });
         let mut payload = DeviceUpdate::default()
             .with_state(upd.on.map(|on| on.on))
             .with_brightness(upd.dimming.map(|dim| dim.brightness / 100.0 * 254.0))
             .with_color_temp(upd.color_temperature.and_then(|ct| ct.mirek))
-            .with_color_xy(upd.color.map(|col| col.xy));
+            .with_color_xy(upd.color.map(|col| col.xy))
+            .with_transition(transition);
 
         // We don't want to send gradient updates twice, but if hue
         // effects are not supported for this light, this is the best