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-rw-r--r--src/tools/tidy/src/deps.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/tools/tidy/src/deps.rs b/src/tools/tidy/src/deps.rs
index f8afb44e75b..a046e0acdde 100644
--- a/src/tools/tidy/src/deps.rs
+++ b/src/tools/tidy/src/deps.rs
@@ -110,6 +110,7 @@ const PERMITTED_RUSTC_DEPENDENCIES: &[&str] = &[
     "datafrog",
     "difference",
     "digest",
+    "displaydoc",
     "dlmalloc",
     "either",
     "ena",