diff --git a/gradle.properties b/gradle.properties
index b3c7a03..af6b7f1 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1 +1,2 @@
 org.gradle.jvmargs=-Xmx2048M
+android.enableD8.desugaring=true
diff --git a/oeffi/proguard.cfg b/oeffi/proguard.cfg
index 3467962..9376e30 100644
--- a/oeffi/proguard.cfg
+++ b/oeffi/proguard.cfg
@@ -32,6 +32,8 @@
     public static <fields>;
 }
 
+-dontwarn java.lang.invoke.**
+
 # serializable
 -keepclassmembers class * implements java.io.Serializable {
     static final long serialVersionUID;