diff --git a/Makefile b/Makefile
index 94eb41995367ed..278c0f9af7e7d7 100644
--- a/Makefile
+++ b/Makefile
@@ -144,8 +144,9 @@ test-all-valgrind: test-build
 	$(PYTHON) tools/test.py --mode=debug,release --valgrind
 
 test-ci: | build-addons
-	$(PYTHON) tools/test.py -p tap --logfile test.tap --mode=release --flaky-tests=$(FLAKY_TESTS) \
-		$(TEST_CI_ARGS) addons message parallel sequential
+	$(PYTHON) tools/test.py -p tap --logfile test.tap -J --mode=release \
+		--flaky-tests=$(FLAKY_TESTS) $(TEST_CI_ARGS) \
+		addons message parallel sequential
 
 test-release: test-build
 	$(PYTHON) tools/test.py --mode=release
diff --git a/vcbuild.bat b/vcbuild.bat
index 3c710c807a53da..34032edac116cd 100644
--- a/vcbuild.bat
+++ b/vcbuild.bat
@@ -52,7 +52,7 @@ if /i "%1"=="noetw"         set noetw=1&goto arg-ok
 if /i "%1"=="noperfctr"     set noperfctr=1&goto arg-ok
 if /i "%1"=="licensertf"    set licensertf=1&goto arg-ok
 if /i "%1"=="test"          set test_args=%test_args% sequential parallel message -J&set jslint=1&goto arg-ok
-if /i "%1"=="test-ci"       set test_args=%test_args% %test_ci_args% -p tap --logfile test.tap message sequential parallel&goto arg-ok
+if /i "%1"=="test-ci"       set test_args=%test_args% %test_ci_args% -p tap -J --logfile test.tap message sequential parallel&goto arg-ok
 if /i "%1"=="test-simple"   set test_args=%test_args% sequential parallel -J&goto arg-ok
 if /i "%1"=="test-message"  set test_args=%test_args% message&goto arg-ok
 if /i "%1"=="test-gc"       set test_args=%test_args% gc&set buildnodeweak=1&goto arg-ok