diff --git a/Cargo.lock b/Cargo.lock
index 6e25d4f863..71223218dd 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1438,9 +1438,9 @@ dependencies = [
 
 [[package]]
 name = "rustc-ap-rustc_lexer"
-version = "697.0.0"
+version = "700.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "67adbe260a0a11910624d6d28c0304fcf7b063e666682111005c83b09f73429d"
+checksum = "5ed36784376b69c941d7aa36e960a52ac712e2663960357121a4d9f2cc58e225"
 dependencies = [
  "unicode-xid",
 ]
diff --git a/crates/syntax/Cargo.toml b/crates/syntax/Cargo.toml
index 55b437a3a2..24298fbfad 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"
-rustc_lexer = { version = "697.0.0", package = "rustc-ap-rustc_lexer" }
+rustc_lexer = { version = "700.0.0", package = "rustc-ap-rustc_lexer" }
 rustc-hash = "1.1.0"
 arrayvec = "0.5.1"
 once_cell = "1.3.1"