diff --git a/Cargo.lock b/Cargo.lock
index e1471d3b0..dab461bf6 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -606,11 +606,10 @@ dependencies = [
 
 [[package]]
 name = "num-bigint"
-version = "0.4.4"
+version = "0.4.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "608e7659b5c3d7cba262d894801b9ec9d00de989e8a82bd4bef91d08da45cdc0"
+checksum = "c165a9ab64cf766f73521c0dd2cfdff64f488b8f0b3e621face3462d3db536d7"
 dependencies = [
- "autocfg",
  "num-integer",
  "num-traits",
  "serde",
diff --git a/Cargo.toml b/Cargo.toml
index 9be55d5ae..35ae21d6c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,7 +21,7 @@ generic-matrix = "0.2.2"
 getopts = "0.2.21"
 glob = "0.3.1"
 itertools = "0.12.1"
-num-bigint = { version = "0.4.4", default-features = false }
+num-bigint = { version = "0.4.5", default-features = false }
 num-integer = "0.1.46"
 num-iter = "0.1.44"
 num-rational = { version = "0.4.1", default-features = false }
diff --git a/pkg/integer/Cargo.toml b/pkg/integer/Cargo.toml
index 3f163d4ad..9c57b31ba 100644
--- a/pkg/integer/Cargo.toml
+++ b/pkg/integer/Cargo.toml
@@ -10,7 +10,7 @@ num-integer = "0.1.46"
 num-traits = "0.2.18"
 
 [dependencies.num-bigint]
-version = "0.4.4"
+version = "0.4.5"
 optional = true
 default-features = false
 features = ["std"]
diff --git a/pkg/seq/Cargo.toml b/pkg/seq/Cargo.toml
index c26d1f523..31e6af242 100644
--- a/pkg/seq/Cargo.toml
+++ b/pkg/seq/Cargo.toml
@@ -10,4 +10,4 @@ num-integer = "0.1.46"
 num-traits = "0.2.18"
 
 [dev-dependencies]
-num-bigint = "0.4.4"
+num-bigint = "0.4.5"