diff --git a/src/chain/store/known_checkpoints.yaml b/src/chain/store/known_checkpoints.yaml
index 7d1715c53c55..a74369fcff79 100644
--- a/src/chain/store/known_checkpoints.yaml
+++ b/src/chain/store/known_checkpoints.yaml
@@ -5,6 +5,8 @@ calibnet:
   - "326a645e679bc590118c80778588ff8d4e4a13eb7db25fe7a2fc3fbdcd97cf751fc4ee6c11f9f2ee97717eb15cb98771b944581ef329cb0dc6802dc81190e017"
   # epoch 424000
   - "8cab45fd441c1fb68d2fd7e45d5e9ef9a5d3b45f68b414ab3e244233dd8e37fc4dacffc8966b2dc8804d4abf92c8a57efda743e26db6805a77a4feac19478293"
+  # epoch 664763
+  - "8d21a66351156966a5e8bd3d4e1d114a731b34e13635c38626be23d531dd482f5988c836cd082cf92cd66e867b441daa427b1456d114ab80285b8f5778bc2caf"
 mainnet:
   # epoch 2325300
   - "319f2351ceaf78fbcc8688dc75a19bdf8ee6e895e547ff5cc2f7b18a3a36b65ff94c1860733137d0244352f82ba6fd9672aec14deee358e7cf6e088bf89a28b1"
@@ -12,3 +14,5 @@ mainnet:
   - "44d12c308ed84a9d07c3edd46934107723216f314b044f6c1cb10a1731a24fd80fb07982a9f895fed3540da9e3b84773f9daa7668a798a219569eebfd0c50c2f"
   # epoch 2745000
   - "579c6c8df8f25821e9ce59a48a8de54eae7e1837d82fa7155a4fb015b4c77456f19490c1082a7f8b896a9db8588e2a9b4e7501b30159992cd2ec0fc2674071cf"
+  # epoch 2965285
+  - "cc6d0c44dbfbc4fdd78b77923130c2241ac47fdfb7c4c6a082d5fa6372ae2a7505fc2fdd1f50434f22545237e7b4e0659cc35075c2e7d162176703ae2ce3e2e0"