diff --git a/travis/build.sh b/travis/build.sh
index 5e11bb79e..6ad5b6328 100755
--- a/travis/build.sh
+++ b/travis/build.sh
@@ -3,4 +3,4 @@ set -ex
 
 # Linux Debug
 ./sky/tools/gn --release
-ninja -j 2 -C out/Release
+ninja -j 4 -C out/Release