diff --git a/pyproject.toml b/pyproject.toml
index 93375a3..baa4e81 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -71,7 +71,7 @@ full = [
     "openadapt-desktop[enterprise]",
 ]
 build = [
-    "pyinstaller>=6.16,<7",
+    "pyinstaller>=6.22.2,<7",
     # The native installer freezes this exact canonical runtime into the
     # engine sidecar.  Keep it exact: Desktop and Flow can release
     # independently, while each installer remains reproducible and rollbackable.