diff --git a/nixos/tests/installer.nix b/nixos/tests/installer.nix
index b2e1abc26ee..c59b97a66e4 100644
--- a/nixos/tests/installer.nix
+++ b/nixos/tests/installer.nix
@@ -171,7 +171,7 @@ let
               ];
 
             virtualisation.diskSize = 8 * 1024;
-            virtualisation.memorySize = 768;
+            virtualisation.memorySize = 1024;
             virtualisation.writableStore = true;
 
             # Use a small /dev/vdb as the root disk for the