diff --git a/docs/en/writing-running-appium/caps.md b/docs/en/writing-running-appium/caps.md
index 5dcb81915..656ed4952 100644
--- a/docs/en/writing-running-appium/caps.md
+++ b/docs/en/writing-running-appium/caps.md
@@ -93,6 +93,8 @@
 |`waitForAppScript`| The ios automation script used to determined if the app has been launched, by default the system wait for the page source not to be empty. The result must be a boolean |e.g. `true;`, `target.elements().length > 0;`, `$.delay(5000); true;` |
 |`webviewConnectRetries`| Number of times to send connection message to remote debugger, to get webview. Default: `8` |e.g., `12`|
 |`appName`| The display name of the application under test. Used to automate backgrounding the app in iOS 9+.|e.g., `UICatalog`|
+|`customSSLCert`|(Sim/Emu-only) Add an SSL certificate to simulator. | e.g. <br/>`-----BEGIN CERTIFICATE-----MIIFWjCCBEKg...`<br/>`-----END CERTIFICATE-----`|
+
 
 ### iOS Only, using XCUITest