diff --git a/Makefile b/Makefile
index 45fb85ae986b2dbbbea7ba99198a4074d1ec6017..4cb096570ab9b74b890292d0a025ff5523c10637 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,6 @@
 IMAGE:=dbscripts/test
-RUN_OPTIONS:=--rm --network=none -v $(PWD):/dbscripts:ro --tmpfs=/tmp:exec -w /dbscripts/test
+NETWORK:=none
+RUN_OPTIONS:=--rm --network=$(NETWORK) -v $(PWD):/dbscripts:ro --tmpfs=/tmp:exec -w /dbscripts/test
 CASES ?= cases
 JOBS ?= $(shell nproc)
 BATS_ARGS ?= --jobs $(JOBS) --verbose-run