diff --git a/.github/workflows/ci-scripts-build.yml b/.github/workflows/ci-scripts-build.yml
index a4f09dbe..cecd092c 100644
--- a/.github/workflows/ci-scripts-build.yml
+++ b/.github/workflows/ci-scripts-build.yml
@@ -240,7 +240,12 @@ jobs:
       # actions/checkout@v2 wants git >=2.18
       # centos:7 has 1.8
       if: matrix.image=='centos:7'
+      # By default, Centos 7 uses mirrorlist.centos.org for yum
+      # mirrorlist.centos.org no longer exists (as of 1st July 2024), so need to update repolist
       run: |
+        sed -i s/mirror.centos.org/vault.centos.org/g /etc/yum.repos.d/*.repo
+        sed -i s/^#.*baseurl=http/baseurl=http/g /etc/yum.repos.d/*.repo
+        sed -i s/^mirrorlist=http/#mirrorlist=http/g /etc/yum.repos.d/*.repo
         yum -y install curl make gcc curl-devel expat-devel gettext-devel openssl-devel zlib-devel perl-ExtUtils-MakeMaker
         curl https://mirrors.edge.kernel.org/pub/software/scm/git/git-2.29.0.tar.gz | tar -xz
         cd git-*
@@ -262,7 +267,7 @@ jobs:
         # people would rather just break all existing scripts...
         [ -e /usr/bin/python ] || ln -sf /usr/bin/python3 /usr/bin/python
         python --version
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: true
     - name: Automatic core dumper analysis