diff --git a/Cargo.toml b/Cargo.toml
index 988e2c5..c3b6b93 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -43,7 +43,7 @@ itertools = "0.10.0"
 log = "0.4"
 percent-encoding = "2"
 rustls = { version = "0.20.4", optional = true }
-rustls-pemfile = { version = "0.3", optional = true }
+rustls-pemfile = { version = "1.0.1", optional = true }
 seahash = "4"
 serde = {version = "1.0", features = ["derive"]}
 serde_json = "1.0"
@@ -53,10 +53,10 @@ tower-service = "^0.3.1"
 url = "2"
 
 [dev-dependencies]
-httptest = "0.14"
-env_logger = "0.7"
+httptest = "0.15"
+env_logger = "0.10"
 tempfile = "3.1"
-webbrowser = "0.5"
+webbrowser = "0.8"
 hyper-rustls = "0.23"
 
 [workspace]
diff --git a/tests/tests.rs b/tests/tests.rs
index f874285..6755787 100644
--- a/tests/tests.rs
+++ b/tests/tests.rs
@@ -1,9 +1,8 @@
 use yup_oauth2::{
     authenticator::{DefaultAuthenticator, DefaultHyperClient, HyperClientBuilder},
     authenticator_delegate::{DeviceAuthResponse, DeviceFlowDelegate, InstalledFlowDelegate},
-    error::{AuthError, AuthErrorCode},
     ApplicationDefaultCredentialsAuthenticator, ApplicationDefaultCredentialsFlowOpts,
-    ApplicationSecret, DeviceFlowAuthenticator, Error, InstalledFlowAuthenticator,
+    ApplicationSecret, DeviceFlowAuthenticator, InstalledFlowAuthenticator,
     InstalledFlowReturnMethod, ServiceAccountAuthenticator, ServiceAccountKey,
     AccessTokenAuthenticator,
 };