diff --git a/extensions/cast/build.gradle b/extensions/cast/build.gradle
index 0fee4dfda2..2bfd037fbc 100644
--- a/extensions/cast/build.gradle
+++ b/extensions/cast/build.gradle
@@ -25,7 +25,6 @@ android {
     defaultConfig {
         minSdkVersion project.ext.minSdkVersion
         targetSdkVersion project.ext.targetSdkVersion
-        consumerProguardFiles 'proguard-rules.txt'
     }
 }
 
diff --git a/extensions/cast/proguard-rules.txt b/extensions/cast/proguard-rules.txt
deleted file mode 100644
index 1271382629..0000000000
--- a/extensions/cast/proguard-rules.txt
+++ /dev/null
@@ -1,10 +0,0 @@
-# Proguard rules specific to the Cast extension.
-
-# DefaultCastOptionsProvider is commonly referred to only by the app's manifest.
--keep class com.google.android.exoplayer2.ext.cast.DefaultCastOptionsProvider
-
-# ExoCastOptionsProvider is commonly referred to only by the app's manifest.
--keep class com.google.android.exoplayer2.ext.cast.ExoCastOptionsProvider
-
-# Don't warn about gms
--dontwarn com.google.android.gms.**