diff --git a/pyproject.toml b/pyproject.toml
index 9b90a66..e48ba0f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -35,7 +35,7 @@ dependencies = [
     "sseclient-py>=1.8.0,<=1.9.0",
     "tqdm>=4.63.0,<=4.70.0",
     "typing_extensions>=4.12.2,<=4.16.0",
-    "xxhash>=1.1.0,<=3.8.1",
+    "xxhash>=1.1.0,<=4.0.1",
     "backoff>=2.2.0,<=2.2.1",
     "rich>=13.7.0,<=15.0.0",
     "tabpfn-common-utils>=0.2.10,<=0.2.19",