diff --git a/aw-design-diagram/out-of-band-sequence.md b/aw-design-diagram/out-of-band-sequence.md
index 0eab60d5f06dfeec22ca7ac3d0ff5d24af1f0578..dc001887fd9d52efce4c4e6361d01c7183a39832 100644
--- a/aw-design-diagram/out-of-band-sequence.md
+++ b/aw-design-diagram/out-of-band-sequence.md
@@ -1,3 +1,4 @@
+```mermaid
 sequenceDiagram
 participant PCM User
 participant PCM App
@@ -12,3 +13,4 @@ participant OCM Proof Manager
  PCM App ->> OCM Proof Manager: Sends the requested attributes, if proof verification is successful it sets isVerified as true and state as done in the database.
  OCM Admin ->> OCM Proof Manager: Calls Get method find-by-presentation-id API, against the presentation-id of proof request, and confirms the status of isVerified and state.
  end
+```