diff --git a/requirements.txt b/requirements.txt
index 9eda502..9dc36cb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
 solidpython
 jupyter
-viewscad
\ No newline at end of file
+viewscad
+ipympl
\ No newline at end of file