diff --git a/Cargo.lock b/Cargo.lock
index e4fad2e28..7a4abe76c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1016,9 +1016,9 @@ dependencies = [
 
 [[package]]
 name = "synstructure"
-version = "0.12.5"
+version = "0.12.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "474aaa926faa1603c40b7885a9eaea29b444d1cb2850cb7c0e37bb1a4182f4fa"
+checksum = "f36bdaa60a83aca3921b5259d5400cbf5e90fc51931376a9bd4a0eb79aa7210f"
 dependencies = [
  "proc-macro2",
  "quote",