diff --git a/Cargo.lock b/Cargo.lock
index e69d97a..7da160a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -807,6 +807,7 @@ dependencies = [
  "futures 0.1.26 (registry+https://github.com/rust-lang/crates.io-index)",
  "git2 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "number_prefix 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-probe 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "pretty_env_logger 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/Cargo.toml b/Cargo.toml
index 04169e7..585d2ab 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,6 +12,7 @@ bytes = "0.4.12"
 futures = "0.1.25"
 git2 = "0.8.0"
 lazy_static = "1.3.0"
+log = "0.4.6"
 number_prefix = "0.3.0"
 openssl-probe = "0.1.2"
 pretty_env_logger = "0.3.0"