diff --git a/package.json b/package.json
index a6fd7a0d76f4b70d38514859dc77dd7014e0180a..b78a0c8583a971e1acd41f67e1e82045cba00639 100644
--- a/package.json
+++ b/package.json
@@ -362,9 +362,9 @@
     "test-qa-dbs:down": "docker-compose -f ./e2e/test/scenarios/docker-compose.yml down",
     "test-qa-dbs:up": "docker-compose -f ./e2e/test/scenarios/docker-compose.yml up -d",
     "test-timezones": "yarn && ./frontend/test/__runner__/run_timezone_tests",
-    "test-timezones-unit": "yarn build:cljs && jest --silent --maxWorkers=2 --config jest.tz.unit.conf.json",
-    "test-unit": "yarn build:cljs && jest --maxWorkers=2",
-    "test-unit-keep-cljs": "jest --maxWorkers=2",
+    "test-timezones-unit": "yarn build:cljs && jest --silent --maxWorkers=4 --config jest.tz.unit.conf.json",
+    "test-unit": "yarn build:cljs && jest --maxWorkers=4",
+    "test-unit-keep-cljs": "jest --maxWorkers=4",
     "test-unit-watch": "yarn test-unit --watch",
     "test-unit-watch:cljs": "yarn concurrently -n 'cljs,tests' 'yarn build-watch:cljs' 'yarn test-unit-keep-cljs --watch'",
     "test-visual": "yarn build && ./bin/build-for-test && yarn test-visual-run",