diff --git a/apps/agent/web-ext.config.ts b/apps/agent/web-ext.config.ts
index fa5494ba5..4fad4b345 100644
--- a/apps/agent/web-ext.config.ts
+++ b/apps/agent/web-ext.config.ts
@@ -40,7 +40,7 @@ export default defineWebExtConfig({
       '/Applications/BrowserOS.app/Contents/MacOS/BrowserOS',
   },
   chromiumArgs,
-  chromiumProfile: '/tmp/browseros-dev',
+  chromiumProfile: env.BROWSEROS_USER_DATA_DIR || '/tmp/browseros-dev',
   keepProfileChanges: true,
   startUrls: ['chrome://newtab'],
 })
diff --git a/tools/dev/cmd/watch.go b/tools/dev/cmd/watch.go
index 101415e89..52dbac352 100644
--- a/tools/dev/cmd/watch.go
+++ b/tools/dev/cmd/watch.go
@@ -74,6 +74,7 @@ func runWatch(cmd *cobra.Command, args []string) error {
 	fmt.Println()
 
 	env := proc.BuildEnv(p, "development")
+	env = append(env, fmt.Sprintf("BROWSEROS_USER_DATA_DIR=%s", userDataDir))
 
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()