diff --git a/google/google.go b/google/google.go
index ccc23ee..ceddd5d 100644
--- a/google/google.go
+++ b/google/google.go
@@ -139,6 +139,7 @@ func (f *credentialsFile) jwtConfig(scopes []string, subject string) *jwt.Config
 		Scopes:       scopes,
 		TokenURL:     f.TokenURL,
 		Subject:      subject, // This is the user email to impersonate
+		Audience:     f.Audience,
 	}
 	if cfg.TokenURL == "" {
 		cfg.TokenURL = JWTTokenURL
diff --git a/google/google_test.go b/google/google_test.go
index be30b08..ea01049 100644
--- a/google/google_test.go
+++ b/google/google_test.go
@@ -37,7 +37,8 @@ var jwtJSONKey = []byte(`{
   "client_email": "gopher@developer.gserviceaccount.com",
   "client_id": "gopher.apps.googleusercontent.com",
   "token_uri": "https://accounts.google.com/o/gophers/token",
-  "type": "service_account"
+  "type": "service_account",
+  "audience": "https://testservice.googleapis.com/"
 }`)
 
 var jwtJSONKeyNoTokenURL = []byte(`{
@@ -48,6 +49,15 @@ var jwtJSONKeyNoTokenURL = []byte(`{
   "type": "service_account"
 }`)
 
+var jwtJSONKeyNoAudience = []byte(`{
+  "private_key_id": "268f54e43a1af97cfc71731688434f45aca15c8b",
+  "private_key": "super secret key",
+  "client_email": "gopher@developer.gserviceaccount.com",
+  "client_id": "gopher.apps.googleusercontent.com",
+  "token_uri": "https://accounts.google.com/o/gophers/token",
+  "type": "service_account"
+}`)
+
 func TestConfigFromJSON(t *testing.T) {
 	conf, err := ConfigFromJSON(webJSONKey, "scope1", "scope2")
 	if err != nil {
@@ -103,6 +113,9 @@ func TestJWTConfigFromJSON(t *testing.T) {
 	if got, want := conf.TokenURL, "https://accounts.google.com/o/gophers/token"; got != want {
 		t.Errorf("TokenURL = %q; want %q", got, want)
 	}
+	if got, want := conf.Audience, "https://testservice.googleapis.com/"; got != want {
+		t.Errorf("Audience = %q; want %q", got, want)
+	}
 }
 
 func TestJWTConfigFromJSONNoTokenURL(t *testing.T) {
@@ -114,3 +127,13 @@ func TestJWTConfigFromJSONNoTokenURL(t *testing.T) {
 		t.Errorf("TokenURL = %q; want %q", got, want)
 	}
 }
+
+func TestJWTConfigFromJSONNoAudience(t *testing.T) {
+	conf, err := JWTConfigFromJSON(jwtJSONKeyNoAudience, "scope1", "scope2")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got, want := conf.Audience, ""; got != want {
+		t.Errorf("Audience = %q; want %q", got, want)
+	}
+}