diff --git a/tests/extra_required.txt b/tests/extra_required.txt
index c498802f..038e6775 100644
--- a/tests/extra_required.txt
+++ b/tests/extra_required.txt
@@ -3,6 +3,7 @@ lib2
 fib
 places
 rand
+rand_limits
 scientific
 shift
 trunc