--- a/Cargo.lock
+++ b/Cargo.lock
@@ -775,17 +775,17 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "geckodriver"
-version = "0.20.1"
+version = "0.21.0"
 dependencies = [
  "chrono 0.2.25 (registry+https://github.com/rust-lang/crates.io-index)",
  "clap 2.31.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.10.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "mozprofile 0.3.0",
  "mozrunner 0.7.0",

--- a/testing/geckodriver/Cargo.toml
+++ b/testing/geckodriver/Cargo.toml
@@ -1,11 +1,11 @@
 [package]
 name = "geckodriver"
-version = "0.20.1"
+version = "0.21.0"
 description = "Proxy for using WebDriver clients to interact with Gecko-based browsers."
 keywords = ["webdriver", "w3c", "httpd", "mozilla", "firefox"]
 repository = "https://hg.mozilla.org/mozilla-central/file/tip/testing/geckodriver"
 readme = "README.md"
 license = "MPL-2.0"
 publish = false
 
 [dependencies]