diff --git a/.github/workflows/cache.yml b/.github/workflows/cache.yml
index 30be2cb75..ecf5b666a 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
         with:
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ee62abc58..8beb472c3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,7 +10,7 @@ on:
         type: string
 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"
     permissions:
       contents: read
       pull-requests: write
diff --git a/.github/workflows/collab.yml b/.github/workflows/collab.yml
index 6edcb01e1..bd406a305 100644
--- a/.github/workflows/collab.yml
+++ b/.github/workflows/collab.yml
@@ -6,7 +6,7 @@ on:
   workflow_dispatch:
 jobs:
   execution-checks:
-    runs-on: "runs-on=${{ github.run_id }}/family=g4dn.2xlarge/image=ubuntu24-gpu-x64/volume=80gb"
+    runs-on: "runs-on=${{ github.run_id }}/family=g4dn.2xlarge/image=ubuntu24-gpu-x64/volume=80gb/spot=false"
     permissions:
       issues: write # required for creating issues on execution failure
     container:
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 20f543543..465aecf27 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -6,7 +6,7 @@ on:
 jobs:
   publish:
     if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags')
-    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:
       - name: Checkout
         uses: actions/checkout@v7