diff --git a/Cargo.lock b/Cargo.lock
index fcdab9a56..be8abe56c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -281,7 +281,7 @@ dependencies = [
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "synstructure 0.12.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "synstructure 0.12.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -825,7 +825,7 @@ dependencies = [
 
 [[package]]
 name = "synstructure"
-version = "0.12.1"
+version = "0.12.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1244,7 +1244,7 @@ dependencies = [
 "checksum ssh2 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d3ecc0e7971a2ebe90b107a9dfb46025e81b66ff761d77cf28c9a8249dd253b"
 "checksum strsim 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
 "checksum syn 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)" = "0e7bedb3320d0f3035594b0b723c8a28d7d336a3eda3881db79e61d676fb644c"
-"checksum synstructure 0.12.1 (registry+https://github.com/rust-lang/crates.io-index)" = "3f085a5855930c0441ca1288cf044ea4aecf4f43a91668abdb870b4ba546a203"
+"checksum synstructure 0.12.2 (registry+https://github.com/rust-lang/crates.io-index)" = "575be94ccb86e8da37efb894a87e2b660be299b41d8ef347f9d6d79fbe61b1ba"
 "checksum syntex 0.42.2 (registry+https://github.com/rust-lang/crates.io-index)" = "0a30b08a6b383a22e5f6edc127d169670d48f905bb00ca79a00ea3e442ebe317"
 "checksum syntex_errors 0.42.0 (registry+https://github.com/rust-lang/crates.io-index)" = "04c48f32867b6114449155b2a82114b86d4b09e1bddb21c47ff104ab9172b646"
 "checksum syntex_pos 0.42.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3fd49988e52451813c61fecbe9abb5cfd4e1b7bb6cdbb980a6fbcbab859171a6"