diff --git a/checks/installation-without-system/flake-module.nix b/checks/installation-without-system/flake-module.nix
index cc58c8ad1..484c0671d 100644
--- a/checks/installation-without-system/flake-module.nix
+++ b/checks/installation-without-system/flake-module.nix
@@ -180,7 +180,7 @@
               self.packages.${pkgs.system}.clan-cli
             ] ++ self.packages.${pkgs.system}.clan-cli.runtimeDependencies;
             environment.etc."install-closure".source = "${closureInfo}/store-paths";
-            virtualisation.memorySize = 2048;
+            virtualisation.memorySize = 3048;
             nix.package = nixPackage;
             nix.settings = {
               substituters = lib.mkForce [ ];
diff --git a/checks/installation/flake-module.nix b/checks/installation/flake-module.nix
index 311c868ca..3b996d305 100644
--- a/checks/installation/flake-module.nix
+++ b/checks/installation/flake-module.nix
@@ -167,7 +167,7 @@
               self.packages.${pkgs.system}.clan-cli
             ] ++ self.packages.${pkgs.system}.clan-cli.runtimeDependencies;
             environment.etc."install-closure".source = "${closureInfo}/store-paths";
-            virtualisation.memorySize = 2048;
+            virtualisation.memorySize = 3048;
             nix.package = nixPackage;
             nix.settings = {
               substituters = lib.mkForce [ ];