diff --git a/.changeset/fix-headed-display-env.md b/.changeset/fix-headed-display-env.md
new file mode 100644
index 00000000..72fbcb82
--- /dev/null
+++ b/.changeset/fix-headed-display-env.md
@@ -0,0 +1,5 @@
+---
+"agent-browser": patch
+---
+
+Fix `--headed` mode on Linux by forwarding environment variables (including `DISPLAY`) to the browser subprocess
diff --git a/src/browser.ts b/src/browser.ts
index 47ac8806..3856263c 100644
--- a/src/browser.ts
+++ b/src/browser.ts
@@ -1097,6 +1097,7 @@ export class BrowserManager {
           userAgent: options.userAgent,
           ...(options.proxy && { proxy: options.proxy }),
           ignoreHTTPSErrors: options.ignoreHTTPSErrors ?? false,
+          env: { ...process.env },
         }
       );
       this.isPersistentContext = true;
@@ -1113,6 +1114,7 @@ export class BrowserManager {
         userAgent: options.userAgent,
         ...(options.proxy && { proxy: options.proxy }),
         ignoreHTTPSErrors: options.ignoreHTTPSErrors ?? false,
+        env: { ...process.env },
       });
       this.isPersistentContext = true;
     } else {
@@ -1121,6 +1123,7 @@ export class BrowserManager {
         headless: options.headless ?? true,
         executablePath: options.executablePath,
         args: options.args,
+        env: { ...process.env },
       });
       this.cdpEndpoint = null;
       context = await this.browser.newContext({