diff --git a/pyproject.toml b/pyproject.toml
index da45289a..14fc2539 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -156,7 +156,7 @@ build = [
     # we want all developer environments to be consistent.
     # These dependencies are not used in production environments
     # and should not conflict with other libraries/tooling.
-    "pyinstaller==6.8.0",
+    "pyinstaller==6.9.0",
     "setuptools==70.0.0",
     "build==1.2.1"
 ]