diff --git a/builders/imgBuilder/linux/default.nix b/builders/imgBuilder/linux/default.nix
index 1503dee..fc614ac 100644
--- a/builders/imgBuilder/linux/default.nix
+++ b/builders/imgBuilder/linux/default.nix
@@ -63,6 +63,6 @@ overlayfsEnabled = vmTools.runInLinuxVM (overlayfsDisabled.overrideAttrs (old: {
     ${fuse-overlayfs}/bin/fuse-overlayfs -o lowerdir=${old.src},workdir=workdir,upperdir=upperdir overlaydir
     cd overlaydir
   '';
-  memSize = 1024;
+  memSize = 2048;
 }));
 in if enableOverlayFS then overlayfsEnabled else overlayfsDisabled
diff --git a/builders/imgBuilder/opensbi/default.nix b/builders/imgBuilder/opensbi/default.nix
index 6587aec..71ae1d1 100644
--- a/builders/imgBuilder/opensbi/default.nix
+++ b/builders/imgBuilder/opensbi/default.nix
@@ -73,6 +73,6 @@ overlayfsEnabled = vmTools.runInLinuxVM (overlayfsDisabled.overrideAttrs (old: {
     ${fuse-overlayfs}/bin/fuse-overlayfs -o lowerdir=${old.src},workdir=workdir,upperdir=upperdir overlaydir
     cd overlaydir
   '';
-  memSize = 1024;
+  memSize = 2048;
 }));
 in if enableOverlayFS then overlayfsEnabled else overlayfsDisabled