diff --git a/Makefile b/Makefile
index 7f745249..4713b5f9 100644
--- a/Makefile
+++ b/Makefile
@@ -79,7 +79,7 @@ coverage:
 	mkdir build_coverage
 	cd build_coverage ; CXX=g++-5 cmake .. -GNinja -DJSON_Coverage=ON
 	cd build_coverage ; ninja
-	cd build_coverage ; ctest
+	cd build_coverage ; ctest -j10
 	cd build_coverage ; ninja lcov_html
 	open build_coverage/test/html/index.html
 
diff --git a/third_party/amalgamate/amalgamate.py b/third_party/amalgamate/amalgamate.py
old mode 100644
new mode 100755