diff --git a/ADOPTERS.md b/ADOPTERS.md
index 657767d..8908c89 100644
--- a/ADOPTERS.md
+++ b/ADOPTERS.md
@@ -5,3 +5,4 @@ project. If you'd like to be included here, please send a Pull Request that
 adds your information to this file.
 
 - [Pinterest](https://www.pinterest.com/)
+- [Ookla/Speedtest.net](https://www.ookla.com/)