diff --git a/components/devtools/actors/thread.rs b/components/devtools/actors/thread.rs
index dc2638bd1354..131647f467c5 100644
--- a/components/devtools/actors/thread.rs
+++ b/components/devtools/actors/thread.rs
@@ -33,6 +33,13 @@ struct ThreadResumedReply {
     type_: String,
 }
 
+#[derive(Serialize)]
+struct ThreadInterruptedReply {
+    from: String,
+    #[serde(rename = "type")]
+    type_: String,
+}
+
 #[derive(Serialize)]
 struct ReconfigureReply {
     from: String,
@@ -93,6 +100,15 @@ impl Actor for ThreadActor {
                 ActorMessageStatus::Processed
             },
 
+            "interrupt" => {
+                let msg = ThreadInterruptedReply {
+                    from: self.name(),
+                    type_: "interrupted".to_owned(),
+                };
+                stream.write_json_packet(&msg);
+                ActorMessageStatus::Processed
+            },
+
             "reconfigure" => {
                 stream.write_json_packet(&ReconfigureReply { from: self.name() });
                 ActorMessageStatus::Processed