diff --git a/forge-gui-android/proguard.cfg b/forge-gui-android/proguard.cfg
index ce332800276..7f89c39296c 100644
--- a/forge-gui-android/proguard.cfg
+++ b/forge-gui-android/proguard.cfg
@@ -27,6 +27,8 @@
 -keep class forge.** { *; }
 -keep class com.thoughtworks.xstream.** { *; }
 -keep class org.apache.commons.lang3.** { *; }
+-keep class com.google.guava.** { *; }
+-keep class com.google.common.** { *; }
 
 -keepclassmembers class com.badlogic.gdx.backends.android.AndroidInput* {
    <init>(com.badlogic.gdx.Application, android.content.Context, java.lang.Object, com.badlogic.gdx.backends.android.AndroidApplicationConfiguration);