diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index c6471bea7..f4451efda 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -44,6 +44,10 @@
 -dontnote rx.internal.util.PlatformDependent
 ##---------------End: proguard configuration for RxJava 1.x  ----------
 
+##---------------Begin: proguard configuration for okhttp  ----------
+-keepclasseswithmembers class okhttp3.MultipartBody$Builder { *; }
+##---------------End: proguard configuration for okhttp  ----------
+
 ##---------------Begin: proguard configuration for kotlinx.serialization  ----------
 -keepattributes *Annotation*, InnerClasses
 -dontnote kotlinx.serialization.** # core serialization annotations