diff --git a/opentelemetry-stackdriver/CHANGELOG.md b/opentelemetry-stackdriver/CHANGELOG.md
index 747ca0d9..a235c368 100644
--- a/opentelemetry-stackdriver/CHANGELOG.md
+++ b/opentelemetry-stackdriver/CHANGELOG.md
@@ -2,13 +2,18 @@
 
 ## vNext
 
+## v0.19.0
+
 ### Added
 
-- Added support for `GoogleTraceContextPropagator`
+- Added support for `GoogleTraceContextPropagator` [#25](https://github.com/open-telemetry/opentelemetry-rust-contrib/pull/25)
 
 ### Changed
 
-- Bump opentelemetry version to 0.22, opentelemetry_sdk version to 0.22
+- Use gcp_auth as the default authorizer [#50](https://github.com/open-telemetry/opentelemetry-rust-contrib/pull/50)
+  yup-oauth2 is still supported and can be enabled via the `yup-authorizer` feature.
+- Bump opentelemetry version to 0.22, opentelemetry_sdk version to 0.22 [#39](https://github.com/open-telemetry/opentelemetry-rust-contrib/pull/39)
+- Bump gcp_auth to 0.11 [#50](https://github.com/open-telemetry/opentelemetry-rust-contrib/pull/50)
 
 ## v0.18.0
 
diff --git a/opentelemetry-stackdriver/Cargo.toml b/opentelemetry-stackdriver/Cargo.toml
index 6067d964..d7fdc437 100644
--- a/opentelemetry-stackdriver/Cargo.toml
+++ b/opentelemetry-stackdriver/Cargo.toml
@@ -1,9 +1,9 @@
 [package]
 name = "opentelemetry-stackdriver"
-version = "0.18.0"
+version = "0.19.0"
 description = "A Rust opentelemetry exporter that uploads traces to Google Stackdriver trace."
 documentation = "https://docs.rs/opentelemetry-stackdriver/"
-repository = "https://github.com/open-telemetry/opentelemetry-rust"
+repository = "https://github.com/open-telemetry/opentelemetry-rust-contrib"
 license = "Apache-2.0"
 edition = "2021"
 exclude = ["/proto"]
@@ -11,7 +11,7 @@ rust-version = "1.65"
 
 [dependencies]
 async-trait = "0.1.48"
-gcp_auth = { version = "0.9", optional = true }
+gcp_auth = { version = "0.11", optional = true }
 hex = "0.4"
 http = "0.2"
 hyper = "0.14.2"
@@ -32,8 +32,8 @@ futures-util = { version = "0.3", default-features = false, features = ["alloc"]
 futures-channel = { version = "0.3", default-features = false, features = ["std"] }
 
 [features]
-default = ["yup-authorizer", "tls-native-roots"]
-yup-authorizer = ["hyper-rustls", "yup-oauth2"]
+default = ["dep:gcp_auth", "tls-native-roots"]
+yup-authorizer = ["hyper-rustls", "dep:yup-oauth2"]
 tls-native-roots = ["tonic/tls-roots"]
 tls-webpki-roots = ["tonic/tls-webpki-roots"]
 propagator = ["once_cell"]
diff --git a/opentelemetry-stackdriver/src/lib.rs b/opentelemetry-stackdriver/src/lib.rs
index b4fe7e9d..e3558916 100644
--- a/opentelemetry-stackdriver/src/lib.rs
+++ b/opentelemetry-stackdriver/src/lib.rs
@@ -12,7 +12,6 @@
 
 use std::{
     collections::HashMap,
-    convert::TryFrom,
     fmt,
     future::Future,
     sync::{