diff --git a/.github/workflows/test_notebooks.yml b/.github/workflows/test_notebooks.yml
index 417b052..eb30ea6 100644
--- a/.github/workflows/test_notebooks.yml
+++ b/.github/workflows/test_notebooks.yml
@@ -18,17 +18,17 @@ jobs:
     steps:
     # Checkout
     - name: Checkout code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
       with:
         fetch-depth: 0
     # Setup
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
     # Restore
     - name: Restore pip cache
-      uses: actions/cache@v2
+      uses: actions/cache@v4
       with:
         # This path is specific to Ubuntu
         path: ~/.cache/pip
diff --git a/COMMITTERS.md b/COMMITTERS.md
index ed93290..6a787dd 100644
--- a/COMMITTERS.md
+++ b/COMMITTERS.md
@@ -1,6 +1,6 @@
 <!--
 
-SPDX-FileCopyrightText: 2017-2022 Contributors to the OpenSTEF project <korte.termijn.prognoses@alliander.com>
+SPDX-FileCopyrightText: 2017-2022 Contributors to the OpenSTEF project <openstef@lfenergy.org>
 
 SPDX-License-Identifier: MPL-2.0
 
diff --git a/RELEASE.md b/RELEASE.md
index 3e899e7..b271773 100644
--- a/RELEASE.md
+++ b/RELEASE.md
@@ -1,6 +1,6 @@
 <!--
 
-SPDX-FileCopyrightText: 2017-2022 Contributors to the OpenSTEF project <korte.termijn.prognoses@alliander.com>
+SPDX-FileCopyrightText: 2017-2022 Contributors to the OpenSTEF project <openstef@lfenergy.org>
 
 SPDX-License-Identifier: MPL-2.0