diff --git a/fichero_printer/CHANGELOG.md b/fichero_printer/CHANGELOG.md
index f76e5ec..04e4412 100644
--- a/fichero_printer/CHANGELOG.md
+++ b/fichero_printer/CHANGELOG.md
@@ -5,9 +5,10 @@ All notable changes to this project are documented in this file.
 The format is based on Keep a Changelog and this project uses Semantic Versioning.
 
 
-## [0.1.38] - 2026-03-21
+## [0.1.39] - 2026-03-21
 
 ### Fixed
+- **Syntax Error**: Fixed unterminated f-string in Bluetooth reset commands
 - **Persistent BLE Errors**: Added comprehensive Bluetooth stack reset for `br-connection-not-supported` errors
 - **Connection Recovery**: Enhanced automatic recovery with full Bluetooth service restart
 - **Classic Bluetooth**: Maintained fixes for `[Errno 12] Out of memory` errors
@@ -27,6 +28,7 @@ The format is based on Keep a Changelog and this project uses Semantic Versionin
 - **Reliability**: Significantly improved BLE connection success rate
 - **Automatic Recovery**: Comprehensive automatic recovery without manual intervention
 - **User Guidance**: Clearer error messages with specific configuration fixes
+- **Code Quality**: Fixed syntax errors and improved string formatting
 
 ## [0.1.37] - 2026-03-20
 
diff --git a/fichero_printer/config.yaml b/fichero_printer/config.yaml
index 785cf5b..cb7612c 100644
--- a/fichero_printer/config.yaml
+++ b/fichero_printer/config.yaml
@@ -1,5 +1,5 @@
 name: "Fichero Printer"
-version: "0.1.38"
+version: "0.1.39"
 name: "Fichero Printer"
 description: "REST API for Fichero D11s thermal label printer with BLE and Classic Bluetooth support"
 url: "https://github.com/your-repo/fichero-printer"
diff --git a/fichero_printer/fichero/api.py b/fichero_printer/fichero/api.py
index 030eeb0..1e2b57f 100644
--- a/fichero_printer/fichero/api.py
+++ b/fichero_printer/fichero/api.py
@@ -82,7 +82,7 @@ async def lifespan(app: FastAPI):  # noqa: ARG001
 app = FastAPI(
     title="Fichero Printer API",
     description="REST API for the Fichero D11s (AiYin) thermal label printer.",
-    version = "0.1.38",
+    version = "0.1.39",
     lifespan=lifespan,
     docs_url=None,
     redoc_url=None,
diff --git a/fichero_printer/fichero/printer.py b/fichero_printer/fichero/printer.py
index 65bfa7a..eb19e21 100644
--- a/fichero_printer/fichero/printer.py
+++ b/fichero_printer/fichero/printer.py
@@ -532,7 +532,7 @@ async def connect(
                                 f'echo -e "remove {address}\nquit" | bluetoothctl',
                                 "sudo systemctl restart bluetooth",
                                 "sleep 3",
-                                f'echo -e "scan on\nscan off\nquit" | bluetoothctl"
+                                f'echo -e "scan on\nscan off\nquit" | bluetoothctl'
                             ]
                             for cmd in reset_commands:
                                 proc = await asyncio.create_subprocess_shell(