diff --git a/doc/specs/debugging_protocol.md b/doc/specs/debugging_protocol.md
index a66753a9b..fbf206f28 100644
--- a/doc/specs/debugging_protocol.md
+++ b/doc/specs/debugging_protocol.md
@@ -1,4 +1,4 @@
-# VC-DBG protocol v1
+# VC-DBG protocol v1.1
 
 ## Notes
 
@@ -116,6 +116,15 @@ Then `value` is:
 }
 ```
 
+### File hot-reload signal
+
+```json
+{
+    "type": "hot-reload",
+    "file": "string"
+}
+```
+
 ## Server-to-client
 
 ### Response signals