diff --git a/src/tools/tidy/src/deps.rs b/src/tools/tidy/src/deps.rs
index 2081d1b3b07..3bfe811b58e 100644
--- a/src/tools/tidy/src/deps.rs
+++ b/src/tools/tidy/src/deps.rs
@@ -254,7 +254,6 @@ const PERMITTED_RUSTC_DEPENDENCIES: &[&str] = &[
     "icu_provider_macros",
     "ident_case",
     "indexmap",
-    "instant",
     "intl-memoizer",
     "intl_pluralrules",
     "is-terminal",