diff --git a/infrastructure/batch.tf b/infrastructure/batch.tf
index a748ab67..cd17cf26 100644
--- a/infrastructure/batch.tf
+++ b/infrastructure/batch.tf
@@ -22,6 +22,6 @@
   stage = var.stage
   batch_tags = {
     module = "batch",
-    revision = "third - 32 vCPU compute environment with 1 vCPU per job"
+    revision = "fourth - 32 vCPU compute environment with 0.5 vCPUs per job"
   }
 }
diff --git a/infrastructure/batch/job_definition.tf b/infrastructure/batch/job_definition.tf
index 746ac265..d97c4ab3 100644
--- a/infrastructure/batch/job_definition.tf
+++ b/infrastructure/batch/job_definition.tf
@@ -71,7 +71,7 @@ resource "aws_batch_job_definition" "scpca_portal_project" {
     resourceRequirements = [
       {
         type  = "VCPU"
-        value = "1.0"
+        value = "0.5"
       },
       {
         type  = "MEMORY"