diff --git a/docs/reference.md b/docs/reference.md
index 0cfabf5..1feda8a 100644
--- a/docs/reference.md
+++ b/docs/reference.md
@@ -31,4 +31,5 @@ Configuration is read from the following (in precedence order)
 | default.locale         | --locale          | en, en-us, en-gb, en-ca, en-au   | English dialect to correct to. |
 | default.extend-identifiers | \-            | table of strings | Corrections for identifiers. When the correction is blank, the word is never valid. When the correction is the key, the word is always valid. |
 | default.extend-words       | \-            | table of strings | Corrections for identifiers. When the correction is blank, the word is never valid. When the correction is the key, the word is always valid. |
-| type.<name>.binary         | <varied>      | <varied>   | See `default.` for child keys.  Run with `--type-list` to see available `<name>`s |
+| type.<name>.<field>        | <varied>      | <varied>   | See `default.` for child keys.  Run with `--type-list` to see available `<name>`s |
+| type.<name>.extend_globs   | \-            | list of strings  | File globs for matching `<name>` |
diff --git a/src/config.rs b/src/config.rs
index 0f3fe91..dba0e2b 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -7,7 +7,7 @@ pub struct Config {
     pub files: Walk,
     pub default: EngineConfig,
     #[serde(rename = "type")]
-    pub type_: std::collections::HashMap<kstring::KString, EngineConfig>,
+    pub type_: std::collections::HashMap<kstring::KString, TypeEngineConfig>,
     #[serde(skip)]
     pub overrides: EngineConfig,
 }
@@ -49,7 +49,7 @@ impl Config {
         for (type_name, engine) in source.type_.iter() {
             self.type_
                 .entry(type_name.to_owned())
-                .or_insert_with(EngineConfig::default)
+                .or_insert_with(TypeEngineConfig::default)
                 .update(engine);
         }
         self.overrides.update(&source.overrides);
@@ -137,6 +137,22 @@ impl Walk {
     }
 }
 
+#[derive(Debug, Clone, Default, serde::Serialize, serde::Deserialize)]
+#[serde(deny_unknown_fields, default)]
+#[serde(rename_all = "kebab-case")]
+pub struct TypeEngineConfig {
+    pub extend_glob: Vec<kstring::KString>,
+    #[serde(flatten)]
+    pub engine: EngineConfig,
+}
+
+impl TypeEngineConfig {
+    pub fn update(&mut self, source: &TypeEngineConfig) {
+        self.extend_glob.extend(source.extend_glob.iter().cloned());
+        self.engine.update(&source.engine);
+    }
+}
+
 #[derive(Debug, Clone, Default, serde::Serialize, serde::Deserialize)]
 #[serde(deny_unknown_fields, default)]
 #[serde(rename_all = "kebab-case")]
diff --git a/src/policy.rs b/src/policy.rs
index b589487..099f268 100644
--- a/src/policy.rs
+++ b/src/policy.rs
@@ -153,8 +153,12 @@ impl<'s> ConfigEngine<'s> {
         type_matcher.add_defaults();
         let mut types: std::collections::HashMap<_, _> = Default::default();
         for (type_name, type_engine) in type_.into_iter() {
+            for glob in type_engine.extend_glob.iter() {
+                type_matcher.add(type_name.as_str(), glob.as_str())?;
+            }
+
             let mut new_type_engine = default.clone();
-            new_type_engine.update(&type_engine);
+            new_type_engine.update(&type_engine.engine);
             new_type_engine.update(&overrides);
             let type_config = self.init_file_config(new_type_engine);
             types.insert(type_name, type_config);