el-date-picker change事件不触发

<el-date-picker 
        class="mo-year-range-picker__start"
        :value="start_year" 
        type="year" 
        placeholder="开始年"
        :clearable="false" 
        value-format="yyyy-MM-dd"
        :editable="false"
        :picker-options="startYearPickerOptions"
        @change="handleStartYearChange"
        @input="handleStartYearChange"
        >
</el-date-picker>