diff --git a/Cargo.lock b/Cargo.lock
index cc1cc8a..60ddfb4 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -786,7 +786,7 @@ dependencies = [
  "number_prefix 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-probe 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "reqwest 0.9.17 (registry+https://github.com/rust-lang/crates.io-index)",
- "ructe 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ructe 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.93 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.93 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.39 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1611,7 +1611,7 @@ dependencies = [
 
 [[package]]
 name = "ructe"
-version = "0.6.2"
+version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "base64 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2554,7 +2554,7 @@ dependencies = [
 "checksum remove_dir_all 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "3488ba1b9a2084d38645c4c08276a1752dcbf2c7130d74f1569681ad5d2799c5"
 "checksum reqwest 0.9.17 (registry+https://github.com/rust-lang/crates.io-index)" = "e57803405f8ea0eb041c1567dac36127e0c8caa1251c843cb03d43fd767b3d50"
 "checksum resolv-conf 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "b263b4aa1b5de9ffc0054a2386f96992058bb6870aab516f8cdeb8a667d56dcb"
-"checksum ructe 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "976a8c6d7b90407935443485911ba072dddbe188f14e173c687b16e0b5d22b43"
+"checksum ructe 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)" = "f061e6ed7558decb33975c99189116a71c78620047763fbe50429f87d3e69694"
 "checksum rustc-demangle 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)" = "a7f4dccf6f4891ebcc0c39f9b6eb1a83b9bf5d747cb439ec6fba4f3b977038af"
 "checksum rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
 "checksum rusttype 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "11ff03da02f6d340bbee5ec55eed03ff9abd6ea013b93bc7c35973cc28f65999"
diff --git a/Cargo.toml b/Cargo.toml
index 0dfb768..fe500d6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,5 +23,5 @@ serde_json = "1.0.39"
 structopt = "0.2.16"
 
 [build-dependencies]
-ructe = "0.6.2"
+ructe = "0.6.4"
 vergen = "3.0.4"