diff --git a/template/cxx/{{cookiecutter.project_slug}}/.gitignore b/template/cxx/{{cookiecutter.project_slug}}/.gitignore
index 02ca01e..90493e3 100644
--- a/template/cxx/{{cookiecutter.project_slug}}/.gitignore
+++ b/template/cxx/{{cookiecutter.project_slug}}/.gitignore
@@ -45,6 +45,7 @@ CMakeCache.txt
 CMakeFiles/
 CMakeScripts/
 Testing/
+build/
 cmake_install.cmake
 install_manifest.txt
 compile_commands.json