diff --git a/Cargo.lock b/Cargo.lock
index 40ae42f87f..15cc261808 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1264,9 +1264,9 @@ dependencies = [
 
 [[package]]
 name = "rustc-ap-rustc_lexer"
-version = "671.0.0"
+version = "673.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "22e1221f3bfa2943c942cf8da319ab2346887f8757778c29c7f1822cd27b521f"
+checksum = "f6b71fa1285bdefe5fb61e59b63d6cc246abf337f4acafdd620d721bc488e671"
 dependencies = [
  "unicode-xid",
 ]
diff --git a/crates/syntax/Cargo.toml b/crates/syntax/Cargo.toml
index 47e351f9d1..ec3132da8d 100644
--- a/crates/syntax/Cargo.toml
+++ b/crates/syntax/Cargo.toml
@@ -13,7 +13,7 @@ doctest = false
 [dependencies]
 itertools = "0.9.0"
 rowan = "0.10.0"
-rustc_lexer = { version = "671.0.0", package = "rustc-ap-rustc_lexer" }
+rustc_lexer = { version = "673.0.0", package = "rustc-ap-rustc_lexer" }
 rustc-hash = "1.1.0"
 arrayvec = "0.5.1"
 once_cell = "1.3.1"