diff --git a/frozen_requirements.txt b/frozen_requirements.txt
index 73b5e2e..6ff3076 100644
--- a/frozen_requirements.txt
+++ b/frozen_requirements.txt
@@ -8,3 +8,4 @@ statsmodels==0.13.2
 lifelines==0.27.6
 pygam==0.8.0
 l0bnb==1.0.0
+ISLP==0.3.17