diff --git a/pyproject.toml b/pyproject.toml
index 66c09f5..5a6656e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -81,7 +81,7 @@ test = [
 packaging = [
     "build>=1.2.2,<2",
     "distro==1.9.* ; sys_platform == 'linux'",
-    "pyinstaller>=6.14.2,<6.19",
+    "pyinstaller>=6.14.2,<6.20",
     "pyinstaller-hooks-contrib>=2025,<2027",
     "pypiwin32==223 ; sys_platform == 'win32'",
 ]