diff --git a/tests/run_tests.sh b/tests/run_tests.sh
index f626112..5b1282b 100755
--- a/tests/run_tests.sh
+++ b/tests/run_tests.sh
@@ -38,6 +38,9 @@
     virtualenv $VENV_DIR
     source ${VENV_DIR}/bin/activate
     python -m pip install salt${PIP_SALT_VERSION}
+    if [[ -f ${CURDIR}/test-requirements.txt ]]; then
+       python -m pip install -r ${CURDIR}/test-requirements.txt
+    fi
 }
 
 setup_test_state() {
diff --git a/tests/test-requirements.txt b/tests/test-requirements.txt
index 7188b2b..bc7dc7f 100644
--- a/tests/test-requirements.txt
+++ b/tests/test-requirements.txt
@@ -1,3 +1,4 @@
 jsonschema
 reno
 setuptools<45.0.0
+msgpack<1.0.0