diff --git a/pyproject.toml b/pyproject.toml
index 464855982..093a99c8c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -65,7 +65,7 @@ dev = [
     "click>=7.0,<=8.1.7",
     "hypothesis>=5.8,<=6.102.4",
     "pdoc>=4.0.0,<=14.5.0",
-    "pyinstaller>=6.6.0,<=6.6.0",
+    "pyinstaller==6.7.0",
     "pytest-asyncio>=0.23.6,<=0.23.7",
     "pytest-cov>=5.0.0,<=5.0.0",
     "pytest-timeout>=2.3.1,<=2.3.1",