diff --git a/Cargo.lock b/Cargo.lock
index 0e6e244..7e1c733 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -172,7 +172,7 @@ dependencies = [
  "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
  "rust_decimal 1.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.106 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.50 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.52 (registry+https://github.com/rust-lang/crates.io-index)",
  "statistical 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -472,7 +472,7 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.50"
+version = "1.0.52"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "itoa 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -624,7 +624,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum ryu 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "bfa8506c1de11c9c4e4c38863ccbe02a305c8188e85a05a784c9e11e1c3910c8"
 "checksum serde 1.0.106 (registry+https://github.com/rust-lang/crates.io-index)" = "36df6ac6412072f67cf767ebbde4133a5b2e88e76dc6187fa7104cd16f783399"
 "checksum serde_derive 1.0.106 (registry+https://github.com/rust-lang/crates.io-index)" = "9e549e3abf4fb8621bd1609f11dfc9f5e50320802273b12f3811a67e6716ea6c"
-"checksum serde_json 1.0.50 (registry+https://github.com/rust-lang/crates.io-index)" = "78a7a12c167809363ec3bd7329fc0a3369056996de43c4b37ef3cd54a6ce4867"
+"checksum serde_json 1.0.52 (registry+https://github.com/rust-lang/crates.io-index)" = "a7894c8ed05b7a3a279aeb79025fdec1d3158080b75b98a08faf2806bb799edd"
 "checksum statistical 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "49d57902bb128e5e38b5218d3681215ae3e322d99f65d5420e9849730d2ea372"
 "checksum strsim 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
 "checksum syn 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)" = "661641ea2aa15845cddeb97dad000d22070bb5c1fb456b96c1cba883ec691e92"