diff --git a/src/settings/mod.rs b/src/settings/mod.rs
index d64e93f56b..c16d73d89f 100644
--- a/src/settings/mod.rs
+++ b/src/settings/mod.rs
@@ -122,6 +122,7 @@ impl Hash for Settings {
         self.flake8_annotations.hash(state);
         self.flake8_bugbear.hash(state);
         self.flake8_quotes.hash(state);
+        self.flake8_tidy_imports.hash(state);
         self.isort.hash(state);
         self.pep8_naming.hash(state);
     }