diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index bb778a1f..930ccfa6 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -21,7 +21,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9", "3.10", "3.11"]
+        python-version: ["3.10", "3.11","3.12"]
     steps:
       - uses: actions/checkout@v4
         with:
diff --git a/pyproject.toml b/pyproject.toml
index f4108dff..301fbbf9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,18 +25,18 @@ classifiers = [
 license = { text = "Apache-2.0" }
 keywords = ["pangeo", "data"]
 dependencies = [
-    "apache-beam",
+    "apache-beam>=2.48",
     "cftime",
-    "dask >= 2021.11.2",
+    "dask",
     "fastparquet",
-    "fsspec[http] >= 2023.4.0",
+    "fsspec[http]",
     "h5netcdf",
-    "h5py >= 3.3.0",
-    "kerchunk >= 0.0.7",
+    "h5py",
+    "kerchunk!=0.2.6",
     "netcdf4",
-    "numcodecs >= 0.9.0",
-    "xarray >= 0.18.0",
-    "zarr >= 2.12.0",
+    "numcodecs",
+    "xarray",
+    "zarr",
 ]
 
 [project.optional-dependencies]