diff --git a/Jenkinsfile b/Jenkinsfile
index 4a7f4e325..4b94419c1 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -14,7 +14,7 @@ pipeline {
                 sh """
 python3 -m venv ${env.TMPDIR}/venv/
 ${env.TMPDIR}/venv/bin/pip install "tox"
-NUMPROCESSES=6 \
+NUMPROCESSES=12 \
 PGPORT=`python3 -c 'import struct; import socket; s=socket.socket(); s.setsockopt(socket.SOL_SOCKET, socket.SO_LINGER, struct.pack("ii", 1, 0)); s.bind(("", 0)); print(s.getsockname()[1]); s.close()'` pg_virtualenv -o fsync=off ${env.TMPDIR}/venv/bin/tox run --recreate ${env.TOXARGS}"""
             }
             post {