diff --git a/README.md b/README.md
index 9b6b870..8c404e7 100644
--- a/README.md
+++ b/README.md
@@ -47,7 +47,7 @@ session_ttl=5
 
 ### Benchmarks
 
-The benchmark: Execute `whoami` 1000 times.
+The benchmark: Execute `whoami` (GNU coreutils 8.32) 1000 times.
 
 |Program|Time|
 --- | ---