diff --git a/pkgs/by-name/op/open-webui/package.nix b/pkgs/by-name/op/open-webui/package.nix
index 1e2d12b7fa72..f60494cc1234 100644
--- a/pkgs/by-name/op/open-webui/package.nix
+++ b/pkgs/by-name/op/open-webui/package.nix
@@ -30,6 +30,7 @@ let
 
     env.CYPRESS_INSTALL_BINARY = "0"; # disallow cypress from downloading binaries in sandbox
     env.ONNXRUNTIME_NODE_INSTALL_CUDA = "skip";
+    env.NODE_OPTIONS = "--max-old-space-size=8192";
 
     installPhase = ''
       runHook preInstall