diff --git a/binder/build.gradle b/binder/build.gradle
index 24dd0d9015..d18fe5e6b2 100644
--- a/binder/build.gradle
+++ b/binder/build.gradle
@@ -96,6 +96,8 @@ tasks.withType(JavaCompile).configureEach {
 
 tasks.register("javadocs", Javadoc) {
     source = android.sourceSets.main.java.srcDirs
+    exclude 'io/grpc/binder/internal/**'
+    exclude 'io/grpc/binder/Internal*'
     classpath += files(android.getBootClasspath())
     classpath += files({
         android.libraryVariants.collect { variant ->