diff --git a/Cargo.lock b/Cargo.lock
index 5d9edc5157d..dce5357b12d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -624,10 +624,10 @@ dependencies = [
  "futures 0.3.19",
  "if_chain",
  "itertools",
- "num_cpus",
  "parking_lot",
  "quote",
  "regex",
+ "rustc-semver",
  "rustc-workspace-hack",
  "rustc_tools_util 0.2.0",
  "semver",