diff --git a/Cargo.lock b/Cargo.lock
index 07bb7d6..0939536 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -175,7 +175,7 @@ version = "3.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "nom 5.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-bigint 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-bigint 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "rusticata-macros 2.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -388,7 +388,7 @@ dependencies = [
 
 [[package]]
 name = "num-bigint"
-version = "0.2.3"
+version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "autocfg 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -954,7 +954,7 @@ dependencies = [
  "base64 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "der-parser 3.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "nom 5.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-bigint 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-bigint 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "rusticata-macros 2.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -989,7 +989,7 @@ dependencies = [
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "nom 5.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-bigint 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-bigint 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "pbkdf2 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "pcsc 2.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "ring 0.16.9 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1073,7 +1073,7 @@ dependencies = [
 "checksum nodrop 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)" = "72ef4a56884ca558e5ddb05a1d1e7e1bfd9a68d9ed024c21704cc98872dae1bb"
 "checksum nom 4.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "2ad2a91a8e869eeb30b9cb3119ae87773a8f4ae617f41b1eb9c154b2905f7bd6"
 "checksum nom 5.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "c618b63422da4401283884e6668d39f819a106ef51f5f59b81add00075da35ca"
-"checksum num-bigint 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "f9c3f34cdd24f334cb265d9bf8bfa8a241920d026916785747a92f0e55541a1a"
+"checksum num-bigint 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)" = "343b3df15c945a59e72aae31e89a7cfc9e11850e96d4fde6fed5e3c7c8d9c887"
 "checksum num-bigint-dig 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b3d03c330f9f7a2c19e3c0b42698e48141d0809c78cd9b6219f85bd7d7e892aa"
 "checksum num-integer 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)" = "b85e541ef8255f6cf42bbfe4ef361305c6c135d10919ecc26126c4e5ae94bc09"
 "checksum num-iter 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)" = "76bd5272412d173d6bf9afdf98db8612bbabc9a7a830b7bfc9c188911716132e"