diff --git a/src/authenticator.rs b/src/authenticator.rs
index 97e6ddb..f7016be 100644
--- a/src/authenticator.rs
+++ b/src/authenticator.rs
@@ -34,7 +34,7 @@ struct AuthenticatorImpl<
 
 /// A trait implemented for any hyper::Client as well as teh DefaultHyperClient.
 pub trait HyperClientBuilder {
-    type Connector: hyper::client::connect::Connect;
+    type Connector: hyper::client::connect::Connect + 'static;
 
     fn build_hyper_client(self) -> hyper::Client<Self::Connector>;
 }
@@ -53,7 +53,7 @@ impl HyperClientBuilder for DefaultHyperClient {
 
 impl<C> HyperClientBuilder for hyper::Client<C>
 where
-    C: hyper::client::connect::Connect,
+    C: hyper::client::connect::Connect + 'static,
 {
     type Connector = C;
 
@@ -72,12 +72,7 @@ pub trait AuthFlow<C> {
 /// An authenticator can be used with `InstalledFlow`'s or `DeviceFlow`'s and
 /// will refresh tokens as they expire as well as optionally persist tokens to
 /// disk.
-pub struct Authenticator<
-    T: AuthFlow<C::Connector>,
-    S: TokenStorage,
-    AD: AuthenticatorDelegate,
-    C: HyperClientBuilder,
-> {
+pub struct Authenticator<T, S, AD, C> {
     client: C,
     token_getter: T,
     store: io::Result<S>,
@@ -125,7 +120,7 @@ where
         hyper_client: hyper::Client<NewC>,
     ) -> Authenticator<T, S, AD, hyper::Client<NewC>>
     where
-        NewC: hyper::client::connect::Connect,
+        NewC: hyper::client::connect::Connect + 'static,
         T: AuthFlow<NewC>,
     {
         Authenticator {
@@ -166,10 +161,8 @@ where
     /// Create the authenticator.
     pub fn build(self) -> io::Result<impl GetToken>
     where
-        T::TokenGetter: 'static + GetToken,
-        S: 'static,
-        AD: 'static,
-        C::Connector: 'static + hyper::client::connect::Connect,
+        T::TokenGetter: GetToken,
+        C::Connector: hyper::client::connect::Connect + 'static,
     {
         let client = self.client.build_hyper_client();
         let store = self.store?;
@@ -186,10 +179,10 @@ where
 
 impl<GT, S, AD, C> AuthenticatorImpl<GT, S, AD, C>
 where
-    GT: 'static + GetToken,
-    S: 'static + TokenStorage,
-    AD: 'static + AuthenticatorDelegate,
-    C: 'static + hyper::client::connect::Connect,
+    GT: GetToken,
+    S: TokenStorage,
+    AD: AuthenticatorDelegate,
+    C: hyper::client::connect::Connect + 'static,
 {
     async fn get_token<T>(&self, scopes: &[T]) -> Result<Token, RequestError>
     where
@@ -266,10 +259,10 @@ where
 
 impl<GT, S, AD, C> GetToken for AuthenticatorImpl<GT, S, AD, C>
 where
-    GT: 'static + GetToken,
-    S: 'static + TokenStorage,
-    AD: 'static + AuthenticatorDelegate,
-    C: 'static + hyper::client::connect::Connect,
+    GT: GetToken,
+    S: TokenStorage,
+    AD: AuthenticatorDelegate,
+    C: hyper::client::connect::Connect + 'static,
 {
     /// Returns the API Key of the inner flow.
     fn api_key(&self) -> Option<String> {
diff --git a/src/device.rs b/src/device.rs
index 2346e1a..51d97b3 100644
--- a/src/device.rs
+++ b/src/device.rs
@@ -69,7 +69,7 @@ impl<FD> DeviceFlow<FD> {
 
 impl<FD, C> crate::authenticator::AuthFlow<C> for DeviceFlow<FD>
 where
-    FD: FlowDelegate + 'static,
+    FD: FlowDelegate,
     C: hyper::client::connect::Connect + 'static,
 {
     type TokenGetter = DeviceFlowImpl<FD, C>;
@@ -97,7 +97,7 @@ pub struct DeviceFlowImpl<FD, C> {
 
 impl<FD, C> GetToken for DeviceFlowImpl<FD, C>
 where
-    FD: FlowDelegate + 'static,
+    FD: FlowDelegate,
     C: hyper::client::connect::Connect + 'static,
 {
     fn token<'a, T>(
@@ -120,9 +120,7 @@ where
 impl<FD, C> DeviceFlowImpl<FD, C>
 where
     C: hyper::client::connect::Connect + 'static,
-    C::Transport: 'static,
-    C::Future: 'static,
-    FD: FlowDelegate + 'static,
+    FD: FlowDelegate,
 {
     /// Essentially what `GetToken::token` does: Retrieve a token for the given scopes without
     /// caching.
diff --git a/src/installed.rs b/src/installed.rs
index d31ea38..5dc19ed 100644
--- a/src/installed.rs
+++ b/src/installed.rs
@@ -53,7 +53,7 @@ where
 
 impl<FD, C> GetToken for InstalledFlowImpl<FD, C>
 where
-    FD: FlowDelegate + 'static,
+    FD: FlowDelegate,
     C: hyper::client::connect::Connect + 'static,
 {
     fn token<'a, T>(
@@ -76,8 +76,8 @@ where
 /// The InstalledFlow implementation.
 pub struct InstalledFlowImpl<FD, C>
 where
-    FD: FlowDelegate + 'static,
-    C: hyper::client::connect::Connect + 'static,
+    FD: FlowDelegate,
+    C: hyper::client::connect::Connect,
 {
     method: InstalledFlowReturnMethod,
     client: hyper::client::Client<C, hyper::Body>,
@@ -98,7 +98,7 @@ pub enum InstalledFlowReturnMethod {
 /// InstalledFlowImpl provides tokens for services that follow the "Installed" OAuth flow. (See
 /// https://www.oauth.com/oauth2-servers/authorization/,
 /// https://developers.google.com/identity/protocols/OAuth2InstalledApp).
-pub struct InstalledFlow<FD: FlowDelegate + 'static> {
+pub struct InstalledFlow<FD: FlowDelegate> {
     method: InstalledFlowReturnMethod,
     flow_delegate: FD,
     appsecret: ApplicationSecret,
@@ -134,7 +134,7 @@ where
 
 impl<FD, C> crate::authenticator::AuthFlow<C> for InstalledFlow<FD>
 where
-    FD: FlowDelegate + 'static,
+    FD: FlowDelegate,
     C: hyper::client::connect::Connect + 'static,
 {
     type TokenGetter = InstalledFlowImpl<FD, C>;
@@ -151,7 +151,7 @@ where
 
 impl<FD, C> InstalledFlowImpl<FD, C>
 where
-    FD: FlowDelegate + 'static,
+    FD: FlowDelegate,
     C: hyper::client::connect::Connect + 'static,
 {
     /// Handles the token request flow; it consists of the following steps:
diff --git a/src/refresh.rs b/src/refresh.rs
index 6c94c67..7b33269 100644
--- a/src/refresh.rs
+++ b/src/refresh.rs
@@ -29,7 +29,7 @@ impl RefreshFlow {
     ///
     /// # Examples
     /// Please see the crate landing page for an example.
-    pub async fn refresh_token<C: 'static + hyper::client::connect::Connect>(
+    pub async fn refresh_token<C: hyper::client::connect::Connect + 'static>(
         client: &hyper::Client<C>,
         client_secret: &ApplicationSecret,
         refresh_token: &str,
diff --git a/src/service_account.rs b/src/service_account.rs
index ebe938f..2c4cb3f 100644
--- a/src/service_account.rs
+++ b/src/service_account.rs
@@ -205,7 +205,6 @@ impl ServiceAccountAccess<DefaultHyperClient> {
 impl<C> ServiceAccountAccess<C>
 where
     C: HyperClientBuilder,
-    C::Connector: 'static,
 {
     /// Use the provided hyper client.
     pub fn hyper_client<NewC: HyperClientBuilder>(