diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7a6fcbe4485d..a0b41c1a6a64 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -28,7 +28,7 @@ jobs:
       # Use instance types with low interruption rate in us-east-2 https://aws.amazon.com/ec2/spot/instance-advisor/
       ec2_instance_type: r6in.32xlarge r6a.32xlarge i4i.32xlarge r7iz.32xlarge
       ec2_ami_id: ami-04d8422a9ba4de80f
-      ec2_spot_instance_strategy: BestEffort
+      ec2_spot_instance_strategy: None
       ec2_instance_ttl: 40 # refreshed by jobs
     secrets: inherit
 
diff --git a/.github/workflows/start-spot.yml b/.github/workflows/start-spot.yml
index eb13f205cb41..dbb5ab0626d0 100644
--- a/.github/workflows/start-spot.yml
+++ b/.github/workflows/start-spot.yml
@@ -21,6 +21,7 @@ jobs:
       # Use instance types with low interruption rate in us-east-2 https://aws.amazon.com/ec2/spot/instance-advisor/
       ec2_instance_type: r6in.32xlarge r6a.32xlarge i4i.32xlarge r7iz.32xlarge
       ec2_ami_id: ami-04d8422a9ba4de80f
+      ec2_spot_instance_strategy: None
       ec2_instance_ttl: 40 # refreshed by jobs
     secrets: inherit