diff --git a/app/config.py b/app/config.py
index eda7280..b3afad9 100644
--- a/app/config.py
+++ b/app/config.py
@@ -41,8 +41,10 @@ class Config:
 
     # Require binary content (reject recognizable formats)
     # Rejects content with known magic bytes (PNG, JPEG, PDF, etc.) and UTF-8 text.
-    REQUIRE_BINARY = (
-        os.environ.get("FLASKPASTE_REQUIRE_BINARY", "0").lower() in ("1", "true", "yes")
+    REQUIRE_BINARY = os.environ.get("FLASKPASTE_REQUIRE_BINARY", "0").lower() in (
+        "1",
+        "true",
+        "yes",
     )
 
     # Reverse proxy trust configuration
diff --git a/fpaste b/fpaste
index c0a42b6..fccf739 100755
--- a/fpaste
+++ b/fpaste
@@ -710,10 +710,41 @@ def is_file_path(arg):
     # Check for common file extensions
     if "." in arg and not arg.startswith("."):
         ext = arg.rsplit(".", 1)[-1].lower()
-        if ext in ("txt", "md", "py", "js", "json", "yaml", "yml", "xml", "html",
-                   "css", "sh", "bash", "c", "cpp", "h", "go", "rs", "java",
-                   "rb", "php", "sql", "log", "conf", "cfg", "ini", "png",
-                   "jpg", "jpeg", "gif", "pdf", "zip", "tar", "gz"):
+        if ext in (
+            "txt",
+            "md",
+            "py",
+            "js",
+            "json",
+            "yaml",
+            "yml",
+            "xml",
+            "html",
+            "css",
+            "sh",
+            "bash",
+            "c",
+            "cpp",
+            "h",
+            "go",
+            "rs",
+            "java",
+            "rb",
+            "php",
+            "sql",
+            "log",
+            "conf",
+            "cfg",
+            "ini",
+            "png",
+            "jpg",
+            "jpeg",
+            "gif",
+            "pdf",
+            "zip",
+            "tar",
+            "gz",
+        ):
             return True
     return False