diff --git a/Cargo.lock b/Cargo.lock
index 37a3305233..799127891f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1370,9 +1370,9 @@ dependencies = [
 
 [[package]]
 name = "rustc-ap-rustc_lexer"
-version = "708.0.0"
+version = "709.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2706fc7106c75eaea49efe9f35f719a6fdfdb95212122ec2b543659406bae7ea"
+checksum = "f69f83314702aaccf29c7401cc63bb0d9fa7869a185a23b8379f08c91514b3f3"
 dependencies = [
  "unicode-xid",
 ]
diff --git a/crates/syntax/Cargo.toml b/crates/syntax/Cargo.toml
index d836c5d1aa..9ee3a8586e 100644
--- a/crates/syntax/Cargo.toml
+++ b/crates/syntax/Cargo.toml
@@ -13,7 +13,7 @@ doctest = false
 [dependencies]
 itertools = "0.10.0"
 rowan = "0.12.2"
-rustc_lexer = { version = "708.0.0", package = "rustc-ap-rustc_lexer" }
+rustc_lexer = { version = "709.0.0", package = "rustc-ap-rustc_lexer" }
 rustc-hash = "1.1.0"
 arrayvec = "0.5.1"
 once_cell = "1.3.1"