diff --git a/requirements3.txt b/requirements3.txt
index f1dd73e..c7c4e27 100644
--- a/requirements3.txt
+++ b/requirements3.txt
@@ -102,6 +102,7 @@ SciencePlots
 scikit-learn
 scipy<1.12
 seaborn
+skbuild
 sunpy
 git+https://github.com/ratt-ru/shadeMS.git
 six