diff --git a/infra/modules/kapsule/main.tf b/infra/modules/kapsule/main.tf
index 9e30c54fb..7804f3c7e 100644
--- a/infra/modules/kapsule/main.tf
+++ b/infra/modules/kapsule/main.tf
@@ -96,7 +96,7 @@ resource "scaleway_k8s_pool" "ci_training_h100" {
   name        = "ci-training-h100"
   node_type   = var.ci_training_h100_type
   size        = 1
-  min_size    = 0
+  min_size    = 1  # Keep warm: avoids 15-min NVIDIA driver install on cold start. Scale to 0 when idle.
   max_size    = var.ci_training_h100_max_size
   autoscaling        = true
   autohealing        = true