diff --git a/android/app/proguard-rules.pro b/android/app/proguard-rules.pro
index 28cc800..592db13 100644
--- a/android/app/proguard-rules.pro
+++ b/android/app/proguard-rules.pro
@@ -17,14 +17,16 @@
 
 -keeppackagenames io.scanbot.sdk.core.contourdetector.**
 -keep public class io.scanbot.sdk.core.contourdetector.**{ *; }
+
 -keeppackagenames io.scanbot.sdk.contourdetector.**
 -keep public class io.scanbot.sdk.contourdetector.**{ *; }
-#
+
 -keeppackagenames com.googlecode.tesseract.android.**
 -keep public class com.googlecode.tesseract.android.**{ *; }
 
 -keeppackagenames io.scanbot.mrzscanner.**
 -keep public class io.scanbot.mrzscanner.**{ *; }
+
 -keeppackagenames io.scanbot.sdk.mcrecognizer.**
 -keep public class io.scanbot.sdk.mcrecognizer.**{ *; }
 
@@ -33,6 +35,7 @@
 
 -keeppackagenames io.scanbot.textorientation.**
 -keep public class io.scanbot.textorientation.**{ *; }
+
 -keeppackagenames io.scanbot.sdk.textorientation.**
 -keep public class io.scanbot.sdk.textorientation.**{ *; }
 
@@ -41,6 +44,7 @@
 
 -keeppackagenames io.scanbot.hicscanner.**
 -keep public class io.scanbot.hicscanner.**{ *; }
+
 -keeppackagenames io.scanbot.sdk.hicscanner.**
 -keep public class io.scanbot.sdk.hicscanner.**{ *; }
 
@@ -52,5 +56,32 @@
 
 -keeppackagenames io.scanbot.sdk.flutter.**
 -keep public class io.scanbot.sdk.flutter.** { *; }
+
 -keeppackagenames io.scanbot.sdk.ui.**
 -keep public class io.scanbot.sdk.ui.**{ *; }
+
+-keeppackagenames io.scanbot.sdk.vin.**
+-keep public class io.scanbot.sdk.vin.**{ *; }
+# Gson
+# Gson uses generic type information stored in a class file when working with fields. Proguard
+# removes such information by default, so configure it to keep all this information.
+-keepattributes Signature
+
+# For using GSON @Expose annotation
+-keepattributes *Annotation*
+
+# Gson specific classes
+-dontwarn sun.misc.**
+-keep class com.google.gson.stream.** { *; }
+
+# Prevent proguard from stripping interface information from TypeAdapter, TypeAdapterFactory,
+# JsonSerializer, JsonDeserializer instances (so they can be used in @JsonAdapter)
+-keep class * implements com.google.gson.TypeAdapter
+-keep class * implements com.google.gson.TypeAdapterFactory
+-keep class * implements com.google.gson.JsonSerializer
+-keep class * implements com.google.gson.JsonDeserializer
+
+# Prevent R8 from leaving Data object members always null
+-keepclassmembers,allowobfuscation class * {
+  @com.google.gson.annotations.SerializedName <fields>;
+}