diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0b3bf2d87..54f880a1d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -538,7 +538,7 @@ jobs:
       fail-fast: false
       matrix:
         box:
-          - fedora/38-cloud-base
+          - fedora/39-cloud-base
           - rockylinux/8@8.0.0
     env:
       BOX: ${{ matrix.box }}
diff --git a/Vagrantfile b/Vagrantfile
index e67025c57..0f68b278c 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -17,7 +17,7 @@
 
 # Vagrantfile for Fedora and EL
 Vagrant.configure("2") do |config|
-  config.vm.box = ENV["BOX"] ? ENV["BOX"].split("@")[0] : "fedora/38-cloud-base"
+  config.vm.box = ENV["BOX"] ? ENV["BOX"].split("@")[0] : "fedora/39-cloud-base"
   # BOX_VERSION is deprecated. Use "BOX=<BOX>@<BOX_VERSION>".
   config.vm.box_version = ENV["BOX_VERSION"] || (ENV["BOX"].split("@")[1] if ENV["BOX"])