diff --git a/requirements-dev.txt b/requirements-dev.txt
index a051415..426be95 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -4,5 +4,5 @@ pytest>=9.0.3
 pytest-timeout==2.4.0
 pip-audit>=2.10.0
 pip-tools>=7.5.3
-pyinstaller>=6.20.0
+pyinstaller>=6.21.0
 pyinstaller-hooks-contrib>=2026.5