ripple effect doesn't work

[IvanKnyaziev]

Took example from samples but it has no ripple effect. Am I missing something?
<mehdi.sakout.fancybuttons.FancyButton
android:id="@+id/btn_instagram"
android:layout_width="64dp"
android:layout_height="64dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginBottom="8dp"
android:padding="10dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/btnAmbientVibes"
fancy:fb_defaultColor="#3f729b"
fancy:fb_focusColor="#313131"
fancy:fb_iconPaddingLeft="0dp"
fancy:fb_iconPaddingRight="0dp"
fancy:fb_iconResource="@drawable/instagram"
fancy:fb_radius="64dp"/>

[codeaskush]

implementation 'com.github.medyo:fancybuttons:1.8.4'
use this version instead of 1.9.0
this worked for me

[null-dev]

Setting android:clickable="true" worked for me.

[roman-ku]

Setting a focus color worked for me:
fancy:fb_focusColor="@color/white"