diff --git a/Cargo.lock b/Cargo.lock
index 01762b3..9555e22 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -60,7 +60,7 @@ dependencies = [
  "percent-encoding 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.73 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.74 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.26 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_urlencoded 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "sha1 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1220,7 +1220,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "serde"
-version = "1.0.73"
+version = "1.0.74"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -1240,7 +1240,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "itoa 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "ryu 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.73 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.74 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1250,7 +1250,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "dtoa 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "itoa 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.73 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.74 (registry+https://github.com/rust-lang/crates.io-index)",
  "url 1.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1548,7 +1548,7 @@ name = "toml"
 version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde 1.0.73 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.74 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1803,7 +1803,7 @@ dependencies = [
  "kamadak-exif 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "memmap 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rayon 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.73 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.74 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.74 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.26 (registry+https://github.com/rust-lang/crates.io-index)",
  "structopt 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1954,7 +1954,7 @@ dependencies = [
 "checksum same-file 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "cfb6eded0b06a0b512c8ddbcf04089138c9b4362c2f696f3c3d76039d68f3637"
 "checksum scoped_threadpool 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "1d51f5df5af43ab3f1360b429fa5e0152ac5ce8c0bd6485cae490332e96846a8"
 "checksum scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "94258f53601af11e6a49f722422f6e3425c52b06245a5cf9bc09908b174f5e27"
-"checksum serde 1.0.73 (registry+https://github.com/rust-lang/crates.io-index)" = "672d47c054c8aaeea272f8bb3793ebbdb793f7b0ab879a55229a4576cb2e137d"
+"checksum serde 1.0.74 (registry+https://github.com/rust-lang/crates.io-index)" = "f218becd0d51dd24297ef804cb9b2de179dcdc2a3ddf8a73b04b4d595d9e6338"
 "checksum serde_derive 1.0.74 (registry+https://github.com/rust-lang/crates.io-index)" = "47e3375b02728fa6f8c53cb8c1ad3dea7689e12793b6af399ad1e0e202f91c18"
 "checksum serde_json 1.0.26 (registry+https://github.com/rust-lang/crates.io-index)" = "44dd2cfde475037451fa99b7e5df77aa3cfd1536575fa8e7a538ab36dcde49ae"
 "checksum serde_urlencoded 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)" = "aaed41d9fb1e2f587201b863356590c90c1157495d811430a0c0325fe8169650"