diff --git a/pyproject.toml b/pyproject.toml
index 88301bb..46182c4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,16 +6,17 @@ authors = [
     {name="Akash Sinha", email="aksinha@kth.se"},
     {name="Andrei Buhaiu", email="buhaiu@kth.se"},
     {name="Joakim Loxdal", email="loxdal@kth.se"},
+    {name="Sandor Berglund", email="sandorb@kth.se"},
 ]
 readme = "README.md"
-requires-python = ">=3.8"
+requires-python = ">=3.8,<=3.13"
 dependencies = [
     "networkx==3.2.1",
     "numpy==1.26.4",
-    "PySide6==6.7.0",
-    "PySide6_Addons==6.7.0",
-    "PySide6_Essentials==6.7.0",
-    "shiboken6==6.7.0",
+    "PySide6~=6.8.1",
+    "PySide6_Addons~=6.8.1",
+    "PySide6_Essentials~=6.8.1",
+    "shiboken6~=6.8.1",
     "mal-toolbox==1.*",
     "mal-simulator==1.*",
     "qt-material==2.14",