diff --git a/overlays/unstable/claude-code/package.nix b/overlays/unstable/claude-code/package.nix
index d27951c..b249104 100644
--- a/overlays/unstable/claude-code/package.nix
+++ b/overlays/unstable/claude-code/package.nix
@@ -1,7 +1,7 @@
-{
-  lib,
-  buildNpmPackage,
-  fetchzip,
+{ lib
+, buildNpmPackage
+, fetchzip
+,
 }:
 
 buildNpmPackage rec {
@@ -27,7 +27,8 @@ buildNpmPackage rec {
   # https://docs.anthropic.com/en/docs/agents-and-tools/claude-code/overview#environment-variables
   postInstall = ''
     wrapProgram $out/bin/claude \
-      --set DISABLE_AUTOUPDATER 1
+      --set DISABLE_AUTOUPDATER 1 \
+      --set NODE_OPTIONS "--max_old_space_size=8192"
   '';
 
   passthru.updateScript = ./update.sh;