diff --git a/Cargo.lock b/Cargo.lock
index ecf6aa5..16a4826 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -980,6 +980,7 @@ dependencies = [
  "openpgp-card-pcsc",
  "openpgp-card-scdc",
  "openpgp-card-sequoia",
+ "rust_util",
 ]
 
 [[package]]
@@ -1221,6 +1222,18 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "rust_util"
+version = "0.6.41"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "df24005feacce81f4ae340464b39c380f7e01e7225bfdef62d40cb44cb1c11d7"
+dependencies = [
+ "lazy_static",
+ "libc",
+ "term",
+ "term_size",
+]
+
 [[package]]
 name = "rustc-demangle"
 version = "0.1.21"
@@ -1434,6 +1447,16 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "term_size"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e4129646ca0ed8f45d09b929036bafad5377103edd06e50bf574b353d2b08d9"
+dependencies = [
+ "libc",
+ "winapi",
+]
+
 [[package]]
 name = "termcolor"
 version = "1.1.3"
diff --git a/Cargo.toml b/Cargo.toml
index 0300d83..d4c1606 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,4 +11,4 @@ openpgp-card = "0.2.2"
 openpgp-card-pcsc = "0.2.1"
 openpgp-card-sequoia = "0.0.8"
 openpgp-card-scdc = "0.2.1"
-
+rust_util = "0.6.41"