diff --git a/python/pyproject.toml b/python/pyproject.toml
index e1820157a1..8bd6f10144 100644
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -21,7 +21,7 @@ dependencies = [
 
 [project.optional-dependencies]
 pandas = [
-    "pandas"
+    "pandas<2"
 ]
 devel = [
     "mypy",