diff --git a/tools/server/tests/tests.sh b/tools/server/tests/tests.sh
index 1d1415663b..c7d5d78059 100755
--- a/tools/server/tests/tests.sh
+++ b/tools/server/tests/tests.sh
@@ -6,7 +6,7 @@ cd $SCRIPT_DIR
 
 set -eu
 
-WORKERS="${PYTEST_WORKERS:-auto}"
+WORKERS="${PYTEST_WORKERS:-4}"
 
 if [ $# -lt 1 ]
 then