diff --git a/src/py_reza_logging/example.py b/src/py_reza_logging/example.py
index e2330e5..f061d6b 100644
--- a/src/py_reza_logging/example.py
+++ b/src/py_reza_logging/example.py
@@ -22,3 +22,4 @@ if __name__ == "__main__":
     logging.getLogger("httpx").setLevel(logging.WARNING)
     log = logging.getLogger(__name__)
     log.info("script_started")
+    log.error('test1')
diff --git a/src/py_reza_logging/setup.py b/src/py_reza_logging/setup.py
index dbcae37..b3817ed 100644
--- a/src/py_reza_logging/setup.py
+++ b/src/py_reza_logging/setup.py
@@ -145,7 +145,6 @@ def setup_logging(
     if enable_file:
         log_dir.mkdir(parents=True, exist_ok=True)
         log_path = log_dir / f"{app_name or 'app'}.log"
-
         file_handler = logging.handlers.RotatingFileHandler(
             filename=log_path,
             maxBytes=max_bytes,
@@ -157,6 +156,19 @@ def setup_logging(
         file_handler.setFormatter(formatter)
         root.addHandler(file_handler)
 
+        if file_level < logging.ERROR:
+            log_path = log_dir / f"{app_name or 'app'}.error.log"
+            file_handler = logging.handlers.RotatingFileHandler(
+                filename=log_path,
+                maxBytes=max_bytes,
+                backupCount=backup_count,
+                encoding="utf-8",
+                delay=True,
+            )
+            file_handler.setLevel(logging.ERROR)
+            file_handler.setFormatter(formatter)
+            root.addHandler(file_handler)
+
 
 def _looks_like_docker() -> bool:
     if os.path.exists("/.dockerenv"):
diff --git a/uv.lock b/uv.lock
new file mode 100644
index 0000000..1c3c589
--- /dev/null
+++ b/uv.lock
@@ -0,0 +1,87 @@
+version = 1
+revision = 3
+requires-python = ">=3.11"
+
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+version = "1.0.0"
+source = { registry = "https://pypi.org/simple" }
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+wheels = [
+    { url = "https://files.pythonhosted.org/packages/f6/20/a4e942f9685df720a106da292e29a53212b27903749cc563b86b612b113e/jalali_core-1.0.0-py3-none-any.whl", hash = "sha256:84e6f5090eadfb35234f24fad084be831d00da3c0b238ee001e8a1fd49bf7924", size = 3616, upload-time = "2024-03-25T09:36:13.133Z" },
+]
+
+[[package]]
+name = "jdatetime"
+version = "5.2.0"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "jalali-core" },
+]
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+wheels = [
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+]
+
+[[package]]
+name = "markdown-it-py"
+version = "4.0.0"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "mdurl" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/5b/f5/4ec618ed16cc4f8fb3b701563655a69816155e79e24a17b651541804721d/markdown_it_py-4.0.0.tar.gz", hash = "sha256:cb0a2b4aa34f932c007117b194e945bd74e0ec24133ceb5bac59009cda1cb9f3", size = 73070, upload-time = "2025-08-11T12:57:52.854Z" }
+wheels = [
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+]
+
+[[package]]
+name = "mdurl"
+version = "0.1.2"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/d6/54/cfe61301667036ec958cb99bd3efefba235e65cdeb9c84d24a8293ba1d90/mdurl-0.1.2.tar.gz", hash = "sha256:bb413d29f5eea38f31dd4754dd7377d4465116fb207585f97bf925588687c1ba", size = 8729, upload-time = "2022-08-14T12:40:10.846Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/b3/38/89ba8ad64ae25be8de66a6d463314cf1eb366222074cfda9ee839c56a4b4/mdurl-0.1.2-py3-none-any.whl", hash = "sha256:84008a41e51615a49fc9966191ff91509e3c40b939176e643fd50a5c2196b8f8", size = 9979, upload-time = "2022-08-14T12:40:09.779Z" },
+]
+
+[[package]]
+name = "py-reza-logging"
+version = "0.1.0"
+source = { editable = "." }
+
+[package.optional-dependencies]
+jalali = [
+    { name = "jdatetime" },
+]
+rich = [
+    { name = "rich" },
+]
+
+[package.metadata]
+requires-dist = [
+    { name = "jdatetime", marker = "extra == 'jalali'", specifier = ">=5.2.0" },
+    { name = "rich", marker = "extra == 'rich'", specifier = ">=14.3.2" },
+]
+provides-extras = ["rich", "jalali"]
+
+[[package]]
+name = "pygments"
+version = "2.19.2"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/b0/77/a5b8c569bf593b0140bde72ea885a803b82086995367bf2037de0159d924/pygments-2.19.2.tar.gz", hash = "sha256:636cb2477cec7f8952536970bc533bc43743542f70392ae026374600add5b887", size = 4968631, upload-time = "2025-06-21T13:39:12.283Z" }
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