diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4447271..4969649 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -35,14 +35,14 @@ jobs:
     strategy:
       matrix:
         os:
-          - ubuntu-20.04
+          - ubuntu-24.04
           - macos-latest
         rust:
           - stable
           - beta
         experimental: [false]
         include:
-          - os: ubuntu-20.04
+          - os: ubuntu-24.04
             rust: nightly
             experimental: true
     steps:
@@ -92,7 +92,7 @@ jobs:
       - name: Download ubuntu artifacts
         uses: actions/download-artifact@v4
         with:
-          name: stableartifacts-ubuntu-20.04
+          name: stableartifacts-ubuntu-24.04
       - name: Download macos artifacts
         uses: actions/download-artifact@v4
         with:
@@ -131,7 +131,7 @@ jobs:
       - name: Download ubuntu artifacts
         uses: actions/download-artifact@v4
         with:
-          name: stableartifacts-ubuntu-20.04
+          name: stableartifacts-ubuntu-24.04
       - name: Download macos artifacts
         uses: actions/download-artifact@v4
         with:
diff --git a/build.sh b/build.sh
index 51d2c6f..ba10def 100755
--- a/build.sh
+++ b/build.sh
@@ -2,7 +2,7 @@
 
 set -ex
 
-if [ $OS_NAME = "ubuntu-20.04" ]
+if [ $OS_NAME = "ubuntu-24.04" ]
 then
   OS_ID="linux"
 elif [ $OS_NAME = "macos-latest" ]
diff --git a/floki_sleep.yaml b/floki_sleep.yaml
deleted file mode 100644
index c809d5e..0000000
--- a/floki_sleep.yaml
+++ /dev/null
@@ -1,6 +0,0 @@
-image: docker-local.metaswitch.com/images.core/rust-dev/ubuntu20.04:9.3.2
-mount: /src
-forward_ssh_agent: true
-shell: bash
-init:
-  - sleep 60