diff --git a/.github/workflows/lint.yaml b/.github/workflows/lint.yaml
index 0cab2313..7ef52638 100644
--- a/.github/workflows/lint.yaml
+++ b/.github/workflows/lint.yaml
@@ -14,7 +14,7 @@ jobs:
         - name: Step Python
           uses: actions/setup-python@v4.6.0
           with:
-            python-version: '3.8.12'
+            python-version: '3.11.7'
         - name: Install OpenMPI for gt4py
           run: |
             sudo apt-get install libopenmpi-dev
diff --git a/.github/workflows/unit_tests.yaml b/.github/workflows/unit_tests.yaml
index e6ef31bc..913ff973 100644
--- a/.github/workflows/unit_tests.yaml
+++ b/.github/workflows/unit_tests.yaml
@@ -8,10 +8,10 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python: [3.8.12, 3.11.7]
+        python: [3.11.7]
     steps:
         - name: Checkout repository
-          uses: actions/checkout@v3.5.2
+          uses: actions/checkout@v4
           with:
             submodules: 'recursive'
         - name: Setup Python
diff --git a/setup.py b/setup.py
index a2484e20..abb1ccf9 100644
--- a/setup.py
+++ b/setup.py
@@ -24,10 +24,11 @@ def local_pkg(name: str, relative_path: str) -> str:
     "xarray",
     "f90nml>=1.1.0",
     "fsspec",
-    "netcdf4",
+    "netcdf4==1.7.0",
     "scipy",  # restart capacities only
     "h5netcdf",  # for xarray
     "dask",  # for xarray
+    "numpy==1.26.4",
 ]