diff --git a/src/tools/tidy/src/deps.rs b/src/tools/tidy/src/deps.rs
index 064dd716521..bba689d07a4 100644
--- a/src/tools/tidy/src/deps.rs
+++ b/src/tools/tidy/src/deps.rs
@@ -141,7 +141,6 @@ const PERMITTED_DEPENDENCIES: &[&str] = &[
     "md-5",
     "measureme",
     "memchr",
-    "memmap",
     "memmap2",
     "memoffset",
     "miniz_oxide",