diff --git a/google/cloudbuild_trigger.go b/google/cloudbuild_trigger.go
index 4368fc421..f1d7c61b3 100644
--- a/google/cloudbuild_trigger.go
+++ b/google/cloudbuild_trigger.go
@@ -113,6 +113,12 @@ func GetCloudBuildTriggerApiObject(d TerraformResourceData, config *Config) (map
 	} else if v, ok := d.GetOkExists("substitutions"); !isEmptyValue(reflect.ValueOf(substitutionsProp)) && (ok || !reflect.DeepEqual(v, substitutionsProp)) {
 		obj["substitutions"] = substitutionsProp
 	}
+	serviceAccountProp, err := expandCloudBuildTriggerServiceAccount(d.Get("service_account"), d, config)
+	if err != nil {
+		return nil, err
+	} else if v, ok := d.GetOkExists("service_account"); !isEmptyValue(reflect.ValueOf(serviceAccountProp)) && (ok || !reflect.DeepEqual(v, serviceAccountProp)) {
+		obj["serviceAccount"] = serviceAccountProp
+	}
 	filenameProp, err := expandCloudBuildTriggerFilename(d.Get("filename"), d, config)
 	if err != nil {
 		return nil, err
@@ -192,6 +198,10 @@ func expandCloudBuildTriggerSubstitutions(v interface{}, d TerraformResourceData
 	return m, nil
 }
 
+func expandCloudBuildTriggerServiceAccount(v interface{}, d TerraformResourceData, config *Config) (interface{}, error) {
+	return v, nil
+}
+
 func expandCloudBuildTriggerFilename(v interface{}, d TerraformResourceData, config *Config) (interface{}, error) {
 	return v, nil
 }