diff --git a/.github/workflows/cache.yml b/.github/workflows/cache.yml
index 1e246c21..2baed89a 100644
--- a/.github/workflows/cache.yml
+++ b/.github/workflows/cache.yml
@@ -6,7 +6,7 @@ on:
   workflow_dispatch:
 jobs:
   cache:
-    runs-on: "runs-on=${{ github.run_id }}/family=g4dn.2xlarge/image=quantecon_ubuntu2404/volume=80gb"
+    runs-on: "runs-on=${{ github.run_id }}/family=g4dn.2xlarge/image=quantecon_ubuntu2404/volume=80gb/spot=false"
     steps:
       - uses: actions/checkout@v7
       - name: Setup Anaconda
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5f75adf9..16d9b15d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -2,7 +2,7 @@ name: Build Project [using jupyter-book]
 on: [pull_request]
 jobs:
   preview:
-    runs-on: "runs-on=${{ github.run_id }}/family=g4dn.2xlarge/image=quantecon_ubuntu2404/volume=80gb"
+    runs-on: "runs-on=${{ github.run_id }}/family=g4dn.2xlarge/image=quantecon_ubuntu2404/volume=80gb/spot=false"
     steps:
       - uses: actions/checkout@v7
         with: