diff --git a/requirements-optional.txt b/requirements-optional.txt
index 4af106b493..0f25ea22d2 100644
--- a/requirements-optional.txt
+++ b/requirements-optional.txt
@@ -2,6 +2,6 @@ matplotlib<3.10.9
 pillow>11,<12.2.1
 pyrevolve==2.2.7
 scipy<1.15.4
-distributed<2026.3.1
+distributed<2026.6.1
 click<9.0
 cloudpickle<3.1.3