diff --git a/pyproject.toml b/pyproject.toml
index 70403d0..fe086e7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -46,7 +46,7 @@ tests = [
 dataflow = [
   "absl-py",
   "apache-beam[gcp]",
-  "gcsfs<=2026.3.0",
+  "gcsfs<=2026.4.0",
   "xarray-beam",
 ]
 examples = [