diff --git a/Android.mk b/Android.mk
index 77bb420..8084b71 100644
--- a/Android.mk
+++ b/Android.mk
@@ -644,6 +644,9 @@
 # Build for the host.
 include $(CLEAR_VARS)
 LOCAL_MODULE := delta_generator
+LOCAL_REQUIRED_MODULES := \
+    bsdiff \
+    imgdiff
 LOCAL_MODULE_CLASS := EXECUTABLES
 LOCAL_CPP_EXTENSION := .cc
 LOCAL_CLANG := true