diff --git a/lib/TXG/Utils.hs b/lib/TXG/Utils.hs
index 56a3c4d..9b3a898 100644
--- a/lib/TXG/Utils.hs
+++ b/lib/TXG/Utils.hs
@@ -135,7 +135,7 @@ cidFromText t = case readEither (T.unpack t) of
 
 chainIds :: ChainwebVersion -> [ChainId]
 chainIds Mainnet01 = ChainId <$> [0..9]
-chainIds Development = ChainId <$> [0..9]
+chainIds Development = ChainId <$> [0..19]
 chainIds Testnet04 = ChainId <$> [0..9]
 
 -- -------------------------------------------------------------------------- --
@@ -306,4 +306,3 @@ mempoolMember
     -> [TransactionHash]
     -> IO (Either ClientError [Bool])
 mempoolMember m a v c txh = mempoolPost m a v c "/member" txh
-