Update CONTRIBUTING.md
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 846dd8a..b52f8ee 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -78,7 +78,8 @@
To keep the source consistent, readable, diffable and easy to merge,
we use a fairly rigid coding style, as defined by the [google-styleguide](https://github.com/google/styleguide) project. All patches will be expected
-to conform to the style outlined [here](https://google.github.io/styleguide/cppguide.html).
+to conform to the style outlined [here](https://google.github.io/styleguide/cppguide.html).
+Use [.clang-format](https://github.com/google/googletest/blob/master/.clang-format) to check your formatting
## Requirements for Contributors ###
