diff --git a/.env-example b/.env-example
index 9ecce2c..6a5d422 100644
--- a/.env-example
+++ b/.env-example
@@ -21,3 +21,4 @@ STORES="bestbuy,bandh,nvidia"
 SCREENSHOT="true"
 TELEGRAM_ACCESS_TOKEN=""
 TELEGRAM_CHAT_ID="1234"
+USER_AGENT="Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36"
diff --git a/README.md b/README.md
index 668b4c2..9e9de93 100644
--- a/README.md
+++ b/README.md
@@ -85,9 +85,12 @@ Here is a list of variables that you can use to customize your newly copied `.en
 | `SCREENSHOT` | Capture screenshot of page if a card is found | Default: `true` |
 | `TELEGRAM_ACCESS_TOKEN` | Telegram access token |
 | `TELEGRAM_CHAT_ID` | Telegram chat ID |
+| `USER_AGENT` | Custom User-Agent header for HTTP requests; optional |
 
 > :point_right: If you have multi-factor authentication (MFA), you will need to create an [app password](https://myaccount.google.com/apppasswords) and use this instead of your Gmail password.
 
+> :point_right: You can find your computer's user agent by [searching google for "my user agent"](http://google.com/search?q=my+user+agent)
+
 > :point_right: You can test your notification configuration by running `npm run test:notification`.
 
 #### Supported stores
diff --git a/src/config.ts b/src/config.ts
index 9b9c3c1..dd4ce1e 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -55,7 +55,7 @@ const page = {
 	width: 1920,
 	height: 1080,
 	navigationTimeout: Number(process.env.PAGE_TIMEOUT ?? 30000),
-	userAgent: 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36'
+	userAgent: process.env.USER_AGENT ?? 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36'
 };
 
 const store = {