diff --git a/go.mod b/go.mod
index 3683d07..7f57930 100644
--- a/go.mod
+++ b/go.mod
@@ -5,11 +5,11 @@ go 1.17
 require (
 	cloud.google.com/go/compute/metadata v0.2.0
 	github.com/google/go-cmp v0.5.8
-	golang.org/x/net v0.5.0
 	google.golang.org/appengine v1.6.7
 )
 
 require (
 	github.com/golang/protobuf v1.5.2 // indirect
+	golang.org/x/net v0.5.0 // indirect
 	google.golang.org/protobuf v1.28.0 // indirect
 )
diff --git a/internal/token.go b/internal/token.go
index 355c386..b4723fc 100644
--- a/internal/token.go
+++ b/internal/token.go
@@ -19,8 +19,6 @@ import (
 	"strings"
 	"sync"
 	"time"
-
-	"golang.org/x/net/context/ctxhttp"
 )
 
 // Token represents the credentials used to authorize
@@ -229,7 +227,7 @@ func RetrieveToken(ctx context.Context, clientID, clientSecret, tokenURL string,
 }
 
 func doTokenRoundTrip(ctx context.Context, req *http.Request) (*Token, error) {
-	r, err := ctxhttp.Do(ctx, ContextClient(ctx), req)
+	r, err := ContextClient(ctx).Do(req.WithContext(ctx))
 	if err != nil {
 		return nil, err
 	}