| #https://www.notion.so/n8n/Frontmatter-432c2b8dff1f43d4b1c8d20075510fe4 | |
| title: Enable modules in Code node | |
| description: Allow the use of both built-in and external modules within the Code node. | |
| contentType: howto | |
| # Enable modules in Code node | |
| For security reasons, the Code node restricts importing modules. It's possible to lift that restriction for built-in and external modules by setting the following environment variables: | |
| - `NODE_FUNCTION_ALLOW_BUILTIN`: For built-in modules | |
| - `NODE_FUNCTION_ALLOW_EXTERNAL`: For external modules sourced from n8n/node_modules directory. External module support is disabled when an environment variable isn't set. | |
| ```bash | |
| # Allows usage of all builtin modules | |
| export NODE_FUNCTION_ALLOW_BUILTIN=* | |
| # Allows usage of only crypto | |
| export NODE_FUNCTION_ALLOW_BUILTIN=crypto | |
| # Allows usage of only crypto and fs | |
| export NODE_FUNCTION_ALLOW_BUILTIN=crypto,fs | |
| # Allow usage of external npm modules. | |
| export NODE_FUNCTION_ALLOW_EXTERNAL=moment,lodash | |
| ``` | |
| Refer to [Environment variables reference](/hosting/configuration/environment-variables/nodes.md) for more information on these variables. | |