diff --git a/src/tools/tidy/src/deps.rs b/src/tools/tidy/src/deps.rs
index bac426495c2f..592ba9c5c794 100644
--- a/src/tools/tidy/src/deps.rs
+++ b/src/tools/tidy/src/deps.rs
@@ -589,6 +589,7 @@ const PERMITTED_CRANELIFT_DEPENDENCIES: &[&str] = &[
     "region",
     "rustc-hash",
     "serde",
+    "serde_core",
     "serde_derive",
     "smallvec",
     "stable_deref_trait",