diff --git a/README.md b/README.md
index 2e10488..d877977 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@ The `--path` argument specifies the path to the directory where the files to be
 
 The `--pattern` argument specifies the regular expression pattern to match against the filenames. This argument is required.
 
-You can use matching groups in the pattern to capture parts of the filename that you want to use in the replacement pattern. For example, the pattern `"S(\d+)E(\d+)"` will match on `"S01E23"` and capture `"01"` in group `1` and `"23"` in group `2`.
+You can use matching groups in the pattern to capture parts of the filename that you want to use in the replacement pattern. For example, the pattern `"S(\d+)E(\d+)"` will match on `"S01E23"` and capture `"01"` in group 1 and `"23"` in group 2.
 
 ### `--replacement`
 
@@ -38,6 +38,12 @@ You can also use the following special tags in the replacement pattern:
 * `{name}` - filename without extension
 * `{ext}` - extension
 
+### `--wildcard` (optional)
+
+Specifies a wildcard pattern to filter which files in the directory are considered. Only files whose names match the wildcard will be renamed. The default value is `"*"`.
+
+For example, if you want to only rename files with the `.mkv` extension, you can use the wildcard pattern `"*.mkv"`.
+
 Here is an example usage:
 
 ```shell