diff --git a/Cargo.toml b/Cargo.toml
index 47422a9..3e266fe 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -87,13 +87,13 @@ serde_json = "1.0"
 encoding = "0.2"
 kstring = "1.0"
 typed-arena = "2.0.1"
+maplit = "1.0"
 
 [dev-dependencies]
 assert_fs = "1.0"
 assert_cmd = "2.0"
 predicates = "2.0"
 criterion = "0.3"
-maplit = "1.0"
 
 [profile.dev]
 panic = "abort"
diff --git a/src/config.rs b/src/config.rs
index 2a21607..ae099da 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -167,6 +167,40 @@ impl TypeEngineConfig {
 
     pub fn patterns(&self) -> impl Iterator<Item = (kstring::KString, GlobEngineConfig)> {
         let mut patterns = self.patterns.clone();
+        patterns
+            .entry("lock".into())
+            .or_insert_with(|| GlobEngineConfig {
+                extend_glob: Vec::new(),
+                engine: EngineConfig {
+                    check_file: Some(false),
+                    ..Default::default()
+                },
+            });
+        patterns
+            .entry("rust".into())
+            .or_insert_with(|| GlobEngineConfig {
+                // From a spell-check perspective, these are more closely related to Rust than Toml
+                extend_glob: vec!["Cargo.toml".into()],
+                engine: EngineConfig {
+                    dict: Some(DictConfig {
+                        extend_words: maplit::hashmap! {
+                            "flate".into() => "flate".into(),
+                            "ser".into() => "ser".into(),
+                        },
+                        ..Default::default()
+                    }),
+                    ..Default::default()
+                },
+            });
+        patterns
+            .entry("python".into())
+            .or_insert_with(|| GlobEngineConfig {
+                // From a spell-check perspective, these are more closely related to Python than Toml
+                extend_glob: vec!["pyproject.toml".into()],
+                engine: EngineConfig {
+                    ..Default::default()
+                },
+            });
         patterns.entry("cert".into()).or_insert_with(|| {
             GlobEngineConfig {
                 extend_glob: vec![
diff --git a/src/policy.rs b/src/policy.rs
index 5c85e83..87787c8 100644
--- a/src/policy.rs
+++ b/src/policy.rs
@@ -194,7 +194,11 @@ impl<'s> ConfigEngine<'s> {
                 }
             }
 
-            let type_config = self.init_file_config(type_engine.engine);
+            let mut engine = default.clone();
+            engine.update(&type_engine.engine);
+            engine.update(&overrides);
+
+            let type_config = self.init_file_config(engine);
             types.insert(type_name, type_config);
         }
         default.update(&overrides);