diff --git a/pyproject.toml b/pyproject.toml
index 169b267e..710179f7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,7 +20,7 @@ dependencies = [
     "matplotlib",
     "numpy",
     "pytac>=0.6.0",
-    "PyQt6==6.4.1",
+    "PyQt6==6.6.1",
     "PyQt6-Qt6==6.4.2",
     "PyQt6-sip==13.4.1",
     "scipy",