diff --git a/fern/products/cli-api-reference/pages/commands.mdx b/fern/products/cli-api-reference/pages/commands.mdx
index a5e24224d..49f9fcb55 100644
--- a/fern/products/cli-api-reference/pages/commands.mdx
+++ b/fern/products/cli-api-reference/pages/commands.mdx
@@ -180,7 +180,7 @@ hideOnThisPage: true
 
     <CodeBlock title="terminal">
     ```bash
-    fern generate [--group <group>] [--api <api>] [--version <version>] [--preview]
+    fern generate [--group <group>] [--api <api>] [--version <version>] [--preview] [--fernignore <path>]
     ```
     </CodeBlock>
 
@@ -223,6 +223,16 @@ hideOnThisPage: true
     fern generate --version 2.11
     ```
 
+    ### fernignore
+
+    Use `--fernignore` to specify a custom `.fernignore` file path for SDK generation. This allows you to temporarily test different ignore configurations without modifying the committed `.fernignore` in your repository.
+
+    Fern will use the specified file instead of the one on the main branch and commit the new `.fernignore` to your repository as part of the generation process.
+
+    ```bash
+    fern generate --fernignore ./custom-fernignore
+    ```
+
   </Accordion>
 
   <Accordion title="fern check">