diff --git a/jenkins.sh b/jenkins.sh
index 0a8bde933d..4804022e80 100755
--- a/jenkins.sh
+++ b/jenkins.sh
@@ -15,4 +15,25 @@ export DUMP_COVERAGE_COMMAND="coverage xml -o coverage.xml"
 # UNSTABLE or FAILURE this build.
 export PEP8SUFFIX="--output-file=violations.flake8.log || echo flake8 finished with status code \$?"
 
-exec tox
+tox
+
+: ${GIT_BRANCH:="$(git rev-parse --abbrev-ref HEAD)"}
+
+set +u
+. .tox/py27/bin/activate
+set -u
+
+rm -rf sytest
+git clone https://github.com/matrix-org/sytest.git sytest
+cd sytest
+
+git checkout "${GIT_BRANCH}" || (echo >&2 "No ref ${GIT_BRANCH} found, falling back to develop" ; git checkout develop)
+
+: ${PERL5LIB:=$WORKSPACE/perl5/lib/perl5}
+: ${PERL_MB_OPT:=--install_base=$WORKSPACE/perl5}
+: ${PERL_MM_OPT:=INSTALL_BASE=$WORKSPACE/perl5}
+export PERL5LIB PERL_MB_OPT PERL_MM_OPT
+
+./install-deps.pl
+
+./run-tests.pl -O tap --synapse-directory .. --all > results.tap