diff --git a/Android.mk b/Android.mk
index d52b220..3553f92 100644
--- a/Android.mk
+++ b/Android.mk
@@ -374,6 +374,9 @@
 
 LOCAL_MODULE := metalava-api-stubs
 LOCAL_DROIDDOC_USE_METALAVA := true
+LOCAL_DROIDDOC_METALAVA_PREVIOUS_API := prebuilts/sdk/api/27.txt
+LOCAL_DROIDDOC_METALAVA_ANNOTATIONS_ENABLED := true
+LOCAL_DROIDDOC_METALAVA_MERGE_ANNOTATIONS_DIR := tools/metalava/manual
 
 LOCAL_DROIDDOC_STUB_OUT_DIR := $(TARGET_OUT_COMMON_INTERMEDIATES)/JAVA_LIBRARIES/metalava_android_stubs_current_intermediates/src
 
@@ -445,6 +448,9 @@
 
 LOCAL_MODULE := metalava-system-api-stubs
 LOCAL_DROIDDOC_USE_METALAVA := true
+LOCAL_DROIDDOC_METALAVA_PREVIOUS_API := prebuilts/sdk/api/27.txt
+LOCAL_DROIDDOC_METALAVA_ANNOTATIONS_ENABLED := true
+LOCAL_DROIDDOC_METALAVA_MERGE_ANNOTATIONS_DIR := tools/metalava/manual
 
 LOCAL_DROIDDOC_STUB_OUT_DIR := $(TARGET_OUT_COMMON_INTERMEDIATES)/JAVA_LIBRARIES/metalava_android_system_stubs_current_intermediates/src
 
@@ -518,6 +524,9 @@
 
 LOCAL_MODULE := metalava-test-api-stubs
 LOCAL_DROIDDOC_USE_METALAVA := true
+LOCAL_DROIDDOC_METALAVA_PREVIOUS_API := prebuilts/sdk/api/27.txt
+LOCAL_DROIDDOC_METALAVA_ANNOTATIONS_ENABLED := true
+LOCAL_DROIDDOC_METALAVA_MERGE_ANNOTATIONS_DIR := tools/metalava/manual
 
 LOCAL_DROIDDOC_STUB_OUT_DIR := $(TARGET_OUT_COMMON_INTERMEDIATES)/JAVA_LIBRARIES/metalava_android_test_stubs_current_intermediates/src