diff --git a/mediapipe/java/com/google/mediapipe/mediapipe_aar.bzl b/mediapipe/java/com/google/mediapipe/mediapipe_aar.bzl
index 7f2cb146c..9b01e2f0b 100644
--- a/mediapipe/java/com/google/mediapipe/mediapipe_aar.bzl
+++ b/mediapipe/java/com/google/mediapipe/mediapipe_aar.bzl
@@ -164,7 +164,10 @@ EOF
         assets_dir = assets_dir,
     )
 
-    _aar_with_jni(name, name + "_android_lib")
+    mediapipe_build_aar_with_jni(
+        name = name,
+        android_library = name + "_android_lib",
+    )
 
 def _mediapipe_jni(name, gen_libmediapipe, calculators = []):
     """Generates MediaPipe jni library.
@@ -203,7 +206,14 @@ def _mediapipe_jni(name, gen_libmediapipe, calculators = []):
         alwayslink = 1,
     )
 
-def _aar_with_jni(name, android_library):
+def mediapipe_build_aar_with_jni(name, android_library):
+    """Builds MediaPipe AAR with jni.
+
+      Args:
+        name: The bazel target name.
+        android_library: the android library that contains jni.
+    """
+
     # Generates dummy AndroidManifest.xml for dummy apk usage
     # (dummy apk is generated by <name>_dummy_app target below)
     native.genrule(
@@ -214,7 +224,7 @@ cat > $(OUTS) <<EOF
 <manifest
   xmlns:android="http://schemas.android.com/apk/res/android"
   package="dummy.package.for.so">
-  <uses-sdk android:minSdkVersion="21"/>
+  <uses-sdk android:minSdkVersion="24"/>
 </manifest>
 EOF
 """,
@@ -241,6 +251,7 @@ chmod +w $(location :{}.aar)
 origdir=$$PWD
 cd $$(mktemp -d)
 unzip $$origdir/$(location :{}_dummy_app_unsigned.apk) "lib/*"
+find lib -name *_dummy_app.so -delete
 cp -r lib jni
 zip -r $$origdir/$(location :{}.aar) jni/*/*.so
 """.format(android_library, name, name, name, name),
@@ -287,6 +298,36 @@ def mediapipe_java_proto_srcs(name = ""):
         src_out = "com/google/mediapipe/proto/CalculatorProto.java",
     ))
 
+    proto_src_list.append(mediapipe_java_proto_src_extractor(
+        target = "//mediapipe/framework:calculator_options_java_proto_lite",
+        src_out = "com/google/mediapipe/proto/CalculatorOptionsProto.java",
+    ))
+
+    proto_src_list.append(mediapipe_java_proto_src_extractor(
+        target = "//mediapipe/framework:stream_handler_java_proto_lite",
+        src_out = "com/google/mediapipe/proto/StreamHandlerProto.java",
+    ))
+
+    proto_src_list.append(mediapipe_java_proto_src_extractor(
+        target = "//mediapipe/framework:packet_factory_java_proto_lite",
+        src_out = "com/google/mediapipe/proto/PacketFactoryProto.java",
+    ))
+
+    proto_src_list.append(mediapipe_java_proto_src_extractor(
+        target = "//mediapipe/framework:packet_generator_java_proto_lite",
+        src_out = "com/google/mediapipe/proto/PacketGeneratorProto.java",
+    ))
+
+    proto_src_list.append(mediapipe_java_proto_src_extractor(
+        target = "//mediapipe/framework:status_handler_java_proto_lite",
+        src_out = "com/google/mediapipe/proto/StatusHandlerProto.java",
+    ))
+
+    proto_src_list.append(mediapipe_java_proto_src_extractor(
+        target = "//mediapipe/framework:mediapipe_options_java_proto_lite",
+        src_out = "com/google/mediapipe/proto/MediaPipeOptionsProto.java",
+    ))
+
     proto_src_list.append(mediapipe_java_proto_src_extractor(
         target = "//mediapipe/framework/formats:landmark_java_proto_lite",
         src_out = "com/google/mediapipe/formats/proto/LandmarkProto.java",