diff --git a/src/utils/BlockUtils.ts b/src/utils/BlockUtils.ts
index 968a05378..e52f9995a 100644
--- a/src/utils/BlockUtils.ts
+++ b/src/utils/BlockUtils.ts
@@ -35,6 +35,7 @@ const cacheTTL = 60 * 15;
 const now = getCurrentTime(); // Seed the cache with initial values.
 const blockTimes: { [chainId: number]: BlockTimeAverage } = {
   [CHAIN_IDs.BASE]: { average: 2, timestamp: now, blockRange: 1 },
+  [CHAIN_IDs.BLAST]: { average: 2, timestamp: now, blockRange: 1 },
   [CHAIN_IDs.LINEA]: { average: 3, timestamp: now, blockRange: 1 },
   [CHAIN_IDs.LISK]: { average: 2, timestamp: now, blockRange: 1 },
   [CHAIN_IDs.MAINNET]: { average: 12.5, timestamp: now, blockRange: 1 },
diff --git a/src/utils/NetworkUtils.ts b/src/utils/NetworkUtils.ts
index d320cb702..5e2ecde96 100644
--- a/src/utils/NetworkUtils.ts
+++ b/src/utils/NetworkUtils.ts
@@ -60,10 +60,12 @@ export function chainIsOPStack(chainId: number): boolean {
   return [
     CHAIN_IDs.OPTIMISM,
     CHAIN_IDs.BASE,
+    CHAIN_IDs.BLAST,
     CHAIN_IDs.LISK,
     CHAIN_IDs.MODE,
     CHAIN_IDs.OPTIMISM_SEPOLIA,
     CHAIN_IDs.BASE_SEPOLIA,
+    CHAIN_IDs.BLAST_SEPOLIA,
     CHAIN_IDs.LISK_SEPOLIA,
     CHAIN_IDs.MODE_SEPOLIA,
   ].includes(chainId);