diff --git a/Cargo.lock b/Cargo.lock
index 9fb7bf0..211bf75 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -966,7 +966,11 @@ dependencies = [
  "env_logger 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "gumdrop 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "sha2 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "subtle-encoding 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "termcolor 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "x509-parser 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "yubikey-piv 0.0.3",
 ]