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-rw-r--r--Cargo.lock1
-rw-r--r--src/tools/rustc-workspace-hack/Cargo.toml2
2 files changed, 2 insertions, 1 deletions
diff --git a/Cargo.lock b/Cargo.lock
index 9119af12667..71ea6f242b1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3393,6 +3393,7 @@ dependencies = [
  "serde",
  "serde_json",
  "smallvec",
+ "syn 0.15.35",
  "url 2.1.0",
  "winapi 0.3.6",
 ]
diff --git a/src/tools/rustc-workspace-hack/Cargo.toml b/src/tools/rustc-workspace-hack/Cargo.toml
index a78cbdc2c4c..285af038a1e 100644
--- a/src/tools/rustc-workspace-hack/Cargo.toml
+++ b/src/tools/rustc-workspace-hack/Cargo.toml
@@ -64,7 +64,7 @@ serde = { version = "1.0.82", features = ['derive'] }
 serde_json = { version = "1.0.31", features = ["raw_value"] }
 smallvec = { version = "0.6", features = ['union', 'may_dangle'] }
 url = { version = "2.0", features = ['serde'] }
-
+syn = { version = "0.15", features = ['full'] }
 
 [target.'cfg(not(windows))'.dependencies]
 openssl = { version = "0.10.12", optional = true }