diff --git a/flumi/Assets/arson-ca.crt b/flumi/Assets/arson-ca.crt
new file mode 100644
index 0000000..c412709
--- /dev/null
+++ b/flumi/Assets/arson-ca.crt
@@ -0,0 +1,2 @@
+-----BEGIN CERTIFICATE-----
+-----END CERTIFICATE-----
diff --git a/flumi/Scripts/Browser/CertificateManager.gd b/flumi/Scripts/Browser/CertificateManager.gd
index 106ea80..0efdb5f 100644
--- a/flumi/Scripts/Browser/CertificateManager.gd
+++ b/flumi/Scripts/Browser/CertificateManager.gd
@@ -10,12 +10,17 @@ static func initialize():
 
 static func load_builtin_ca():
 	var ca_file = FileAccess.open("res://Assets/gurted-ca.crt", FileAccess.READ)
+	var arson_ca_file = FileAccess.open("res://Assets/arson-ca.crt", FileAccess.READ)
 	if ca_file:
 		var ca_cert_pem = ca_file.get_as_text()
 		ca_file.close()
 		
+		var arson_ca_cert_pem = arson_ca_file.get_as_text()
+		arson_ca_file.close()
+		
 		if not ca_cert_pem.is_empty():
 			trusted_ca_certificates.append(ca_cert_pem)
+			trusted_ca_certificates.append(arson_ca_cert_pem)
 			print("Loaded built-in GURT CA certificate")
 		else:
 			print("Built-in CA certificate not yet configured")