diff --git a/start_ocean.sh b/start_ocean.sh
index 6d61d59..9302b50 100755
--- a/start_ocean.sh
+++ b/start_ocean.sh
@@ -31,7 +31,7 @@ COMPOSE_DIR="${DIR}/compose-files"
 export AQUARIUS_VERSION=${AQUARIUS_VERSION:-v4.0.8}
 export PROVIDER_VERSION=${PROVIDER_VERSION:-v1.0.9}
 export SUBGRAPH_VERSION=${SUBGRAPH_VERSION:-v4main}
-export CONTRACTS_VERSION=${CONTRACTS_VERSION:-v1.0.0-alpha.35}
+export CONTRACTS_VERSION=${CONTRACTS_VERSION:-v1.0.0}
 export RBAC_VERSION=${RBAC_VERSION:-next}
 
 export OPERATOR_SERVICE_VERSION=${OPERATOR_SERVICE_VERSION:-oceanprotocol/operator-service:v4main}