diff --git a/.github/workflows/build_and_upload_pypi.yml b/.github/workflows/build_and_upload_pypi.yml
index 8742209..60066ca 100644
--- a/.github/workflows/build_and_upload_pypi.yml
+++ b/.github/workflows/build_and_upload_pypi.yml
@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Set up Python
       uses: actions/setup-python@v4
       with:
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 9767e2b..7359d02 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -10,7 +10,7 @@ jobs:
   publish:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: publish-to-conda
       uses: jegp/conda-package-publish-action@v1.6 #GiulioRossetti/conda-package-publish-action@v1.1.0
       with:
diff --git a/.github/workflows/python-package-conda.yml b/.github/workflows/python-package-conda.yml
index 2a6ab17..7ac9c3a 100644
--- a/.github/workflows/python-package-conda.yml
+++ b/.github/workflows/python-package-conda.yml
@@ -9,7 +9,7 @@ jobs:
       max-parallel: 5
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Set up Python 3.8
       uses: actions/setup-python@v4
       with:
diff --git a/.github/workflows/test_ubuntu.yml b/.github/workflows/test_ubuntu.yml
index 218006d..2b27585 100644
--- a/.github/workflows/test_ubuntu.yml
+++ b/.github/workflows/test_ubuntu.yml
@@ -19,11 +19,11 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.10", "3.11"]
 
     steps:
-    - uses: actions/checkout@v2
-    - uses: conda-incubator/setup-miniconda@v2
+    - uses: actions/checkout@v4
+    - uses: conda-incubator/setup-miniconda@v3
       with:
         auto-update-conda: true
         python-version: ${{ matrix.python-version }}