diff --git a/default.properties b/default.properties
index 247186a6..9fd0c316 100644
--- a/default.properties
+++ b/default.properties
@@ -9,5 +9,10 @@
 
 # Indicates whether an apk should be generated for each density.
 split.density=false
+
 # Project target.
 target=android-9
+
+# Enable Proguard
+#proguard.config=proguard.cfg
+
diff --git a/proguard.cfg b/proguard.cfg
new file mode 100644
index 00000000..01dc66c8
--- /dev/null
+++ b/proguard.cfg
@@ -0,0 +1,39 @@
+-optimizationpasses 5
+-dontusemixedcaseclassnames
+-dontskipnonpubliclibraryclasses
+-dontpreverify
+
+-verbose
+-optimizations !code/simplification/arithmetic,!field/*,!class/merging/*
+
+-keep public class * extends android.app.Activity
+-keep public class * extends android.app.Application
+-keep public class * extends android.app.Service
+-keep public class * extends android.content.BroadcastReceiver
+-keep public class * extends android.content.ContentProvider
+-keep public class com.android.vending.licensing.ILicensingService
+
+-keepclasseswithmembernames class * {
+    native <methods>;
+}
+
+-keepclasseswithmembernames class * {
+    public <init>(android.content.Context, android.util.AttributeSet);
+}
+
+-keepclasseswithmembernames class * {
+    public <init>(android.content.Context, android.util.AttributeSet, int);
+}
+
+-keepclassmembers enum * {
+    public static **[] values();
+    public static ** valueOf(java.lang.String);
+}
+
+-keep class * implements android.os.Parcelable {
+  public static final android.os.Parcelable$Creator *;
+}
+
+-dontwarn
+-dontnote
+