diff --git a/codelimit/__main__.py b/codelimit/__main__.py
index f25c757..a49f633 100755
--- a/codelimit/__main__.py
+++ b/codelimit/__main__.py
@@ -1,10 +1,11 @@
 import os
 from pathlib import Path
-from typing import List, Annotated
+from typing import List, Annotated, Optional
 
 import typer
 
 from codelimit.common.CheckResult import CheckResult
+from codelimit.common.Configuration import Configuration
 from codelimit.common.Scanner import scan_codebase, is_excluded
 from codelimit.common.report.Report import Report
 from codelimit.common.report.ReportReader import ReportReader
@@ -91,8 +92,14 @@ def upload(
 
 
 @cli.callback()
-def main():
+def main(
+    exclude: Annotated[
+        Optional[list[str]], typer.Option(help="Glob patterns for exclusion")
+    ] = None
+):
     """CodeLimit: Your refactoring alarm."""
+    if exclude:
+        Configuration.excludes.extend(exclude)
 
 
 if __name__ == "__main__":
diff --git a/codelimit/common/Configuration.py b/codelimit/common/Configuration.py
index ddf21c1..e23a1ac 100644
--- a/codelimit/common/Configuration.py
+++ b/codelimit/common/Configuration.py
@@ -1,28 +1,29 @@
-default_excludes = [
-    ".bzr",
-    ".direnv",
-    ".eggs",
-    ".git",
-    ".git-rewrite",
-    ".hg",
-    ".ipynb_checkpoints",
-    ".mypy_cache",
-    ".nox",
-    ".pants.d",
-    ".pytest_cache",
-    ".pytype",
-    ".ruff_cache",
-    ".svn",
-    ".tox",
-    ".venv",
-    ".vscode",
-    "__pypackages__",
-    "_build",
-    "buck-out",
-    "build",
-    "dist",
-    "node_modules",
-    "venv",
-    "test",
-    "tests",
-]
+class Configuration:
+    excludes = [
+        ".bzr",
+        ".direnv",
+        ".eggs",
+        ".git",
+        ".git-rewrite",
+        ".hg",
+        ".ipynb_checkpoints",
+        ".mypy_cache",
+        ".nox",
+        ".pants.d",
+        ".pytest_cache",
+        ".pytype",
+        ".ruff_cache",
+        ".svn",
+        ".tox",
+        ".venv",
+        ".vscode",
+        "__pypackages__",
+        "_build",
+        "buck-out",
+        "build",
+        "dist",
+        "node_modules",
+        "venv",
+        "test",
+        "tests",
+    ]
diff --git a/codelimit/common/Scanner.py b/codelimit/common/Scanner.py
index c66f315..e16c108 100644
--- a/codelimit/common/Scanner.py
+++ b/codelimit/common/Scanner.py
@@ -1,3 +1,4 @@
+import fnmatch
 import os
 from os.path import relpath
 from pathlib import Path
@@ -6,7 +7,7 @@
 from halo import Halo
 
 from codelimit.common.Codebase import Codebase
-from codelimit.common.Configuration import default_excludes
+from codelimit.common.Configuration import Configuration
 from codelimit.common.Language import Language
 from codelimit.common.Location import Location
 from codelimit.common.Measurement import Measurement
@@ -96,7 +97,13 @@ def scan_file(language: Language, path: str) -> list[Measurement]:
 
 
 def is_excluded(path: Path):
-    for part in path.parts[:-1]:
-        if part in default_excludes:
-            return True
+    for exclude in Configuration.excludes:
+        exclude_parts = exclude.split(os.sep)
+        if len(exclude_parts) == 1:
+            for part in path.parts:
+                if fnmatch.fnmatch(part, exclude):
+                    return True
+        else:
+            if fnmatch.fnmatch(str(path), exclude):
+                return True
     return False
diff --git a/docs/configuration.md b/docs/configuration.md
index 5e036bd..cae964e 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -18,13 +18,57 @@ Or you can ignore a function by putting a `# nocl` comment on any line of the
 header:
 
 ```python
-def some_function(): # nocl
+def some_function():  # nocl
     ...
 ```
 
 ```python
 def some_functions(
         some_numbers: list[int]
-) -> int: # nocl
+) -> int:  # nocl
     ...
 ```
+
+## Excluding files
+
+Files can be excluded from analysis by using the `--exclude` option.
+This option can be used multiple times and takes a [glob pattern](https://en.wikipedia.org/wiki/Glob_(programming)) as a
+value, for example:
+
+```shell
+codelimit --exclude "*.generated.py" --exclude "docs/*" ...
+```
+
+The `--exclude` option extends the default exclusion list.
+The default exclusion list is:
+
+```python
+[
+    ".bzr",
+    ".direnv",
+    ".eggs",
+    ".git",
+    ".git-rewrite",
+    ".hg",
+    ".ipynb_checkpoints",
+    ".mypy_cache",
+    ".nox",
+    ".pants.d",
+    ".pytest_cache",
+    ".pytype",
+    ".ruff_cache",
+    ".svn",
+    ".tox",
+    ".venv",
+    ".vscode",
+    "__pypackages__",
+    "_build",
+    "buck-out",
+    "build",
+    "dist",
+    "node_modules",
+    "venv",
+    "test",
+    "tests",
+]
+```
\ No newline at end of file
diff --git a/tests/common/test_Scanner.py b/tests/common/test_Scanner.py
index 217ad44..eb63541 100644
--- a/tests/common/test_Scanner.py
+++ b/tests/common/test_Scanner.py
@@ -2,7 +2,8 @@
 import tempfile
 from pathlib import Path
 
-from codelimit.common.Scanner import scan_codebase
+from codelimit.common.Configuration import Configuration
+from codelimit.common.Scanner import scan_codebase, is_excluded
 from codelimit.common.source_utils import get_location_range
 
 
@@ -68,3 +69,18 @@ def test_skip_hidden_files():
     assert result.total_loc() == 2
     assert len(result.all_measurements()) == 1
     assert result.all_files()[0] == "foo.py"
+
+
+def test_is_excluded():
+    assert is_excluded(Path("venv/foo/bar.py"))
+    assert not is_excluded(Path("foo/bar.py"))
+
+    Configuration.excludes = ["output"]
+
+    assert is_excluded(Path("output/foo/bar.py"))
+    assert not is_excluded(Path("venv/foo/bar.py"))
+    assert not is_excluded(Path("foo/bar.py"))
+
+    Configuration.excludes = ["foo/bar/*"]
+
+    assert is_excluded(Path("foo/bar/foobar.py"))