diff --git a/pyproject.toml b/pyproject.toml
index 91b38f6..678e95b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,14 +38,14 @@ dependencies = [
   "pyproj >= 3.0",
   "requests >= 2.27",
   "xarray >= 0.19",
-  "fsspec >= 2022.5.0",
+  "fsspec >= 2022.1",
   "aiohttp >= 3.8.1",
 ]
 
 [project.optional-dependencies]
 parallel = ["loky >= 2.9"]
 s3 = [
-  "s3fs >= 2022.1.0",
+  "s3fs >= 2022.1",
   "zarr >= 2.10"
   ]