diff --git a/src/tools/tidy/src/deps.rs b/src/tools/tidy/src/deps.rs
index ea587210b4f..799d685ce5c 100644
--- a/src/tools/tidy/src/deps.rs
+++ b/src/tools/tidy/src/deps.rs
@@ -254,6 +254,7 @@ const PERMITTED_CRANELIFT_DEPENDENCIES: &[&str] = &[
     "libloading",
     "log",
     "mach",
+    "memchr",
     "object",
     "regalloc",
     "region",