Disable ripple effect on Spinner dropdown item Android

Question

I have Spinner with custom layout for its dropdown view using CheckedTextView. The checkedtextview have custom background to use custom color and corner radius. But the ripple effect kinda ruin its UI. How to disable the ripple?

I have tried using set rippleColor, itemRippleColor and foreground to null or transparent, but it doesnt work. Here is my code

Spinner:

<androidx.appcompat.widget.AppCompatSpinner
                    android:id="@+id/spnSelectYear"
                    android:layout_width="@dimen/dimen_0dp"
                    android:layout_height="wrap_content"
                    style="@style/SpinnerTheme"
                    android:layout_weight="1"
                    android:entries="@array/array_year" />

Spinner theme:

<style name="SpinnerTheme" parent="android:Widget.Material.Spinner.Underlined">
    <item name="android:background">@drawable/bg_spinner</item>
    <item name="android:popupBackground">@drawable/bg_rounded_white</item>
    <item name="overlapAnchor">false</item>
    <item name="android:textAlignment">textStart</item>
</style>

Item Dropdown:

<?xml version="1.0" encoding="utf-8"?>
<androidx.appcompat.widget.AppCompatCheckedTextView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/tvYear"
    style="@style/TextAppearance.AppCompat.Widget.TextView.SpinnerItem"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginHorizontal="@dimen/dimen_10dp"
    android:layout_marginVertical="@dimen/dimen_4dp"
    android:background="@drawable/selector_background_dropdown"
    android:maxLines="1"
    android:padding="@dimen/dimen_20dp"
    tools:text="Select" />