diff --git a/requirements-opt.txt b/requirements-opt.txt
index 3badc79c7..ad49ae289 100644
--- a/requirements-opt.txt
+++ b/requirements-opt.txt
@@ -1,3 +1,4 @@
 linkml-runtime==1.7.4; python_version >= "3.9"
 schemasheets==0.2.1; python_version >= "3.9"
 oaklib==0.5.32; python_version >= "3.9"
+fsspec==2024.10.0