diff --git a/install/pyinstaller.spec b/install/pyinstaller.spec
index ffff330c..3c5c19bf 100644
--- a/install/pyinstaller.spec
+++ b/install/pyinstaller.spec
@@ -20,7 +20,7 @@ a = Analysis(
     hiddenimports=[],
     hookspath=[],
     runtime_hooks=[],
-    excludes=[],
+    excludes=['jinja2.asyncsupport'],
     win_no_prefer_redirects=False,
     win_private_assemblies=False,
     cipher=None)