diff --git a/emerald-grpc b/emerald-grpc
index 697d347b..474627a5 160000
--- a/emerald-grpc
+++ b/emerald-grpc
@@ -1 +1 @@
-Subproject commit 697d347b5bedc98b86cd21a5969efd0e03406158
+Subproject commit 474627a53bde6576d56276687ff3b1c1c5fca96a
diff --git a/foundation/src/main/resources/chains.yaml b/foundation/src/main/resources/chains.yaml
index 0ed1375d..cd06dedb 100644
--- a/foundation/src/main/resources/chains.yaml
+++ b/foundation/src/main/resources/chains.yaml
@@ -918,4 +918,18 @@ chain-settings:
           code: BERACHAIN_ARTIO
           short-names: [artio, berachain-artio]
           chain-id: 0x138d5
-          grpcId: 10047
\ No newline at end of file
+          grpcId: 10047
+    - id: blast
+      label: Blast
+      type: eth
+      settings:
+        expected-block-time: 2s
+        lags:
+          syncing: 40
+          lagging: 20
+      chains:
+        - id: Sepolia
+          code: BLAST_SEPOLIA
+          short-names: [blast-sepolia]
+          chain-id: 0xa0c71fd
+          grpcId: 10049
\ No newline at end of file