diff --git a/Cargo.lock b/Cargo.lock
index 73ade7c..9616ba3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "adler32"
 version = "1.0.3"
@@ -290,9 +292,9 @@ dependencies = [
 
 [[package]]
 name = "num-traits"
-version = "0.2.14"
+version = "0.2.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9a64b1ec5cda2586e284722486d802acf1f7dbdc623e2bfc57e65ca1cd099290"
+checksum = "578ede34cf02f8924ab9447f50c28075b4d3e5b269972345e7e0372b38c6cdcd"
 dependencies = [
  "autocfg 1.0.0",
 ]
diff --git a/libpsudoc/Cargo.toml b/libpsudoc/Cargo.toml
index 104b578..6f3f6b6 100644
--- a/libpsudoc/Cargo.toml
+++ b/libpsudoc/Cargo.toml
@@ -8,6 +8,6 @@ edition = "2018"
 
 [dependencies]
 llvm-sys = "80.1.2"
-num-traits = "0.2.14"
+num-traits = "0.2.15"
 num-bigint = "0.4.0"
 lazy_static = "1.4.0"