diff --git a/.travis.yml b/.travis.yml
index c128dfb20..397363fd1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,7 +9,7 @@ cache: pip
 before_install:
     - pip install docutils
 script:
-    - make -j
+    - make -j$(nproc)
 
 deploy:
     provider: script