1 files changed, 2 insertions, 0 deletions
diff --git a/TESTING b/TESTING
index 8d65f15..1619666 100644
--- a/TESTING
+++ b/TESTING
@@ -271,3 +271,5 @@ To make use of this in the test suite add
 
 This is not compatible with running yarns in parallel
 and depends on the test suite coverage to produce sufficient results.
+
+Making use of this also requires the penlight library to be installed.