diff --git a/release/src/pytrnsys.spec b/release/src/pytrnsys.spec
index a616d829..5970a32c 100644
--- a/release/src/pytrnsys.spec
+++ b/release/src/pytrnsys.spec
@@ -44,8 +44,8 @@ ga = Analysis(
     ["runPytrnsysGui.py"],
     pathex=[],
     binaries=[],
-    datas=collect_data_files("pytrnsys-gui"),
-    hiddenimports=copy_metadata("jupyter_client"),
+    datas=[*collect_data_files("pytrnsys-gui"), *copy_metadata("jupyter_client")],
+    hiddenimports=[],
     hookspath=[],
     hooksconfig={},
     runtime_hooks=[],