diff --git a/.gitignore b/.gitignore
index 83f64f145..5cb06d73d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -49,6 +49,7 @@ tests/core/test_varint
 tests/core/test_xml
 tests/core/test_core_slice
 tests/core/test_core_thread
+tests/core/test_core_runtime
 tests/vendor/vendor_botan
 # Visual Studio 2015 cache/options directory
 .vs/