diff --git a/.travis.yml b/.travis.yml
index 81a5d6fbb..d2ec181b3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -21,6 +21,10 @@ matrix:
       env: TESTENV=py36-pyqt59
     - os: linux
       env: TESTENV=py36-pyqt510
+      addons:
+         apt:
+           packages:
+           - ttf-dejavu-core
     - os: linux
       env: TESTENV=py36-pyqt511-cov
     # https://github.com/travis-ci/travis-ci/issues/9069