diff --git a/pyproject.toml b/pyproject.toml
index fa32798aa7c46e2593d14386466c9dd44d5304e7..d48814cd9841b8719d8b879beab972ad1cc5f369 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,7 +26,8 @@ classifiers = [
 ]
 
 dependencies = [
-    'Jpype1'
+    'Jpype1',
+    'numpy'
 ]
 
 [project.urls]