diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 04313611..c69b3f74 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -21,7 +21,8 @@ on:
 jobs:
   krill_e2e_test:
     env:
-      TF_VAR_size: 's-1vcpu-1gb'
+      # RIPE NCC validator fails with OOM without at least 2gb RAM
+      TF_VAR_size: 's-1vcpu-2gb'
       TF_VAR_domain: 'krill.cloud'
       TF_VAR_tags: '["krill", "e2etest"]'