diff --git a/proto/cmp/services/cancellation/v1/accept.proto b/proto/cmp/services/cancellation/v1/accept.proto
index ab7dee7..eab5f54 100644
--- a/proto/cmp/services/cancellation/v1/accept.proto
+++ b/proto/cmp/services/cancellation/v1/accept.proto
@@ -6,6 +6,10 @@ import "cmp/types/v1/common.proto";
 import "cmp/types/v2/price.proto";
 
 // Request for cancellation acceptance
+//
+// ![Diagram](https://storage.googleapis.com/docs-cmp-files/diagrams/proto/cmp/services/cancellation/v1/accept.proto.dot.xs.svg)
+//
+// [Open Message Diagram](https://storage.googleapis.com/docs-cmp-files/diagrams/proto/cmp/services/cancellation/v1/accept.proto.dot.svg)
 message AcceptCancellationRequest {
   // Request header
   optional cmp.types.v1.RequestHeader header = 1;
diff --git a/proto/cmp/services/cancellation/v1/services.proto b/proto/cmp/services/cancellation/v1/services.proto
index 3a19769..ed13c86 100644
--- a/proto/cmp/services/cancellation/v1/services.proto
+++ b/proto/cmp/services/cancellation/v1/services.proto
@@ -9,6 +9,11 @@ import "cmp/services/cancellation/v1/counter.proto";
 import "cmp/services/cancellation/v1/initiate.proto";
 import "cmp/services/cancellation/v1/reject.proto";
 
+// Cancellation service
+//
+// ![Diagram](https://storage.googleapis.com/docs-cmp-files/diagrams/proto/cmp/services/cancellation/v1/services.proto.dot.xs.svg)
+//
+// [Open Message Diagram](https://storage.googleapis.com/docs-cmp-files/diagrams/proto/cmp/services/cancellation/v1/services.proto.dot.svg)
 service CancellationService {
   // Initiate cancellation
   rpc InitiateCancellation(InitiateCancellationRequest) returns (InitiateCancellationResponse) {}