diff --git a/Cargo.lock b/Cargo.lock
index 61010dc444..42c285902e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -13,9 +13,9 @@ dependencies = [
 
 [[package]]
 name = "adler"
-version = "0.2.3"
+version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ee2a4ec343196209d6594e19543ae87a39f96d5534d7174822a3ad825dd6ed7e"
+checksum = "bedc89c5c7b5550ffb9372eb5c5ffc7f9f705cc3f4a128bd4669b9745f555093"
 
 [[package]]
 name = "always-assert"
@@ -917,9 +917,9 @@ dependencies = [
 
 [[package]]
 name = "miniz_oxide"
-version = "0.4.3"
+version = "0.4.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0f2d26ec3309788e423cfbf68ad1800f061638098d76a83681af979dc4eda19d"
+checksum = "a92518e98c078586bc6c934028adcca4c92a53d6a958196de835170a01d84e4b"
 dependencies = [
  "adler",
  "autocfg",
@@ -1373,9 +1373,9 @@ dependencies = [
 
 [[package]]
 name = "rustc-ap-rustc_lexer"
-version = "707.0.0"
+version = "708.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e27206aceb3b2153a3c367727d534362a1ce63a43ece8fd878195738a83aaf6f"
+checksum = "2706fc7106c75eaea49efe9f35f719a6fdfdb95212122ec2b543659406bae7ea"
 dependencies = [
  "unicode-xid",
 ]
diff --git a/crates/syntax/Cargo.toml b/crates/syntax/Cargo.toml
index e41171b57a..d836c5d1aa 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 = "707.0.0", package = "rustc-ap-rustc_lexer" }
+rustc_lexer = { version = "708.0.0", package = "rustc-ap-rustc_lexer" }
 rustc-hash = "1.1.0"
 arrayvec = "0.5.1"
 once_cell = "1.3.1"