diff --git a/Makefile b/Makefile
index bb3bc16..61e9d4a 100644
--- a/Makefile
+++ b/Makefile
@@ -24,5 +24,5 @@ test:
 
 ci-test:
 	./scripts/prepare_test_repos.sh $(TMP_DIR)
-	./scripts/run_foreach_test_repos.sh $(TMP_DIR) "sed -i '1i sandboxExecServer = \"172.17.0.1:5051\"' conf.toml"
+	./scripts/run_foreach_test_repos.sh $(TMP_DIR) "sed -i '2i \ \ \"sandboxExecServer\": \"172.17.0.1:5051\",' conf.json"
 	go test -coverprofile cover.out -v ./...