diff --git a/library/stdarch/crates/assert-instr-macro/Cargo.toml b/library/stdarch/crates/assert-instr-macro/Cargo.toml
index 7fd1d2b80cc1..13d20cb35545 100644
--- a/library/stdarch/crates/assert-instr-macro/Cargo.toml
+++ b/library/stdarch/crates/assert-instr-macro/Cargo.toml
@@ -8,6 +8,6 @@ proc-macro = true
 test = false
 
 [dependencies]
-proc-macro2 = { version = "0.2", features = ["nightly"] }
-quote = "0.4"
-syn = { version = "0.12", features = ["full"] }
+proc-macro2 = { version = "0.3", features = ["nightly"] }
+quote = "0.5"
+syn = { version = "0.13", features = ["full"] }
diff --git a/library/stdarch/crates/simd-test-macro/Cargo.toml b/library/stdarch/crates/simd-test-macro/Cargo.toml
index 137c2378c5de..88b98febf6fb 100644
--- a/library/stdarch/crates/simd-test-macro/Cargo.toml
+++ b/library/stdarch/crates/simd-test-macro/Cargo.toml
@@ -8,5 +8,5 @@ proc-macro = true
 test = false
 
 [dependencies]
-proc-macro2 = { version = "0.2", features = ["nightly"] }
-quote = "0.4"
+proc-macro2 = { version = "0.3", features = ["nightly"] }
+quote = "0.5"
diff --git a/library/stdarch/crates/stdsimd-verify/Cargo.toml b/library/stdarch/crates/stdsimd-verify/Cargo.toml
index 9861a7a5ca64..09371c43a508 100644
--- a/library/stdarch/crates/stdsimd-verify/Cargo.toml
+++ b/library/stdarch/crates/stdsimd-verify/Cargo.toml
@@ -4,9 +4,9 @@ version = "0.1.0"
 authors = ["Alex Crichton <alex@alexcrichton.com>"]
 
 [dependencies]
-proc-macro2 = { version = "0.2", features = ["nightly"] }
-quote = "0.4"
-syn = { version = "0.12", features = ["full"] }
+proc-macro2 = { version = "0.3", features = ["nightly"] }
+quote = "0.5"
+syn = { version = "0.13", features = ["full"] }
 
 [lib]
 proc-macro = true