diff --git a/nixos/tests/hibernate.nix b/nixos/tests/hibernate.nix
index 4f05b99a5a11..fc6857e2fd02 100644
--- a/nixos/tests/hibernate.nix
+++ b/nixos/tests/hibernate.nix
@@ -51,6 +51,7 @@ in makeTest {
         connect-timeout = 1
       '';
 
+      virtualisation.memorySize = 2048;
       virtualisation.diskSize = 8 * 1024;
       virtualisation.emptyDiskImages = [
         # Small root disk for installer