diff --git a/Cargo.lock b/Cargo.lock
index d6bced2c..f8093728 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3420,9 +3420,9 @@ checksum = "6446ced80d6c486436db5c078dde11a9f73d42b57fb273121e160b84f63d894c"
 
 [[package]]
 name = "structopt"
-version = "0.3.21"
+version = "0.3.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5277acd7ee46e63e5168a80734c9f6ee81b1367a7d8772a2d765df2a3705d28c"
+checksum = "bf9d950ef167e25e0bdb073cf1d68e9ad2795ac826f2f3f59647817cf23c0bfa"
 dependencies = [
  "clap",
  "lazy_static",
@@ -3431,9 +3431,9 @@ dependencies = [
 
 [[package]]
 name = "structopt-derive"
-version = "0.4.14"
+version = "0.4.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5ba9cdfda491b814720b6b06e0cac513d922fc407582032e8706e9f137976f90"
+checksum = "134d838a2c9943ac3125cf6df165eda53493451b719f3255b2a26b85f772d0ba"
 dependencies = [
  "heck",
  "proc-macro-error",
diff --git a/zebra-utils/Cargo.toml b/zebra-utils/Cargo.toml
index 387fe43f..fd0de01a 100644
--- a/zebra-utils/Cargo.toml
+++ b/zebra-utils/Cargo.toml
@@ -8,7 +8,7 @@ edition = "2018"
 publish = false
 
 [dependencies]
-structopt = "0.3.21"
+structopt = "0.3.23"
 color-eyre = "0.5.11"
 hex = "0.4"
 serde_json = "1.0"