diff --git a/.travis.yml b/.travis.yml
index 668ad8c..35f8494 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -41,9 +41,10 @@ jobs:
       php: 7.2
     - <<: *MUTATION_AND_UNIT_TEST
       php: 7.3
-    - <<: *UNIT_TEST
+    - <<: *MUTATION_AND_UNIT_TEST
       php: nightly
       env: ALLOW_FAILURE
+      script: composer test-units
 
 
     - &COMMONMARK_TEST