diff --git a/pyproject.toml b/pyproject.toml
index 943bae6..408db63 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -53,5 +53,5 @@ attr = "pyiron_snippets.__version__"
 
 [project.optional-dependencies]
 tests = [
-    "cloudpickle==3.0.0",
+    "cloudpickle==3.1.0",
 ]
\ No newline at end of file