diff --git a/cockroachdb/src/jepsen/cockroach/auto.clj b/cockroachdb/src/jepsen/cockroach/auto.clj
index f2c5b34e3..93195a21a 100644
--- a/cockroachdb/src/jepsen/cockroach/auto.clj
+++ b/cockroachdb/src/jepsen/cockroach/auto.clj
@@ -26,9 +26,12 @@
 ;; CockroachDB user and db name for jdbc-mode = :cdb-*
 (def db-user "root")
 (def db-passwd "dummy")
-(def db-port 26257)
 (def dbname "jepsen") ; will get created automatically
 
+;; Ports
+(def db-port 26257)
+(def http-port 26258)
+
 ;; Paths
 (def working-path "Home directory for cockroach setup" "/opt/cockroach")
 (def cockroach "Cockroach binary" (str working-path "/cockroach"))
@@ -49,6 +52,8 @@
 ;; Extra command-line arguments to give to `cockroach start`
 (def cockroach-start-arguments
   (concat [:start
+           :--port      db-port
+           :--http-port http-port
            ;; ... other arguments here ...
            ]
           (if insecure [:--insecure] [])))