diff --git a/.travis/unittest.sh b/.travis/unittest.sh
index e42764368c85a5cc776e25c1e136bb974a16b312..a2b248f630e8ee7ef0d4d059a6b8dfa00a78593f 100755
--- a/.travis/unittest.sh
+++ b/.travis/unittest.sh
@@ -24,6 +24,10 @@ unittest(){
 trap 'abort' 0
 set -e
 
+cd tools; make; cd - 
+. tools/venv/bin/activate
+pip3 install pytest
+
 unittest .
 
 trap : 0