diff --git a/pyproject.toml b/pyproject.toml
index aa3bb51d6b..656751ce16 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -100,7 +100,7 @@ strict-forcefields-generic = [
     "tensorflow==2.21.0; sys_platform == 'darwin' or sys_platform == 'win32'",
 #     "mattersim>=1.2.3", # need to be activated again
     "wandb==0.28.0", # required for mattersim
-    "upet==0.2.5",
+    "upet==0.2.6",
 ]
 strict-forcefields-torch-limited = [
     "matgl==4.0.3",