diff --git a/run_ci_tests.sh b/run_ci_tests.sh
index 2a99bdf..712ac1b 100755
--- a/run_ci_tests.sh
+++ b/run_ci_tests.sh
@@ -31,7 +31,7 @@ echo "Last commits:"
 git log -2
 fi
 
-pip install --upgrade tox
+pip install --upgrade tox trollius
 pip install --upgrade --force-reinstall pygments chardet
 pip3 install "pygit2 <= `rpm -q libgit2 --queryformat='%{version}'`"
 parallel -v ::: \