diff --git a/pyproject.toml b/pyproject.toml
index 3f02acaa2bce43309cfe0b4aa0b453d116b179d8..66486ad0e23ac827a4e282ef16fb03516999b289 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,7 +27,7 @@ classifiers = [
 ]
 
 dependencies = [
-    'Jpype1',
+    'Jpype1==1.5.0',
     'numpy'
 ]