diff --git a/core/clear_vars.mk b/core/clear_vars.mk
index a8b7b28..9713b6e 100644
--- a/core/clear_vars.mk
+++ b/core/clear_vars.mk
@@ -141,6 +141,7 @@
 LOCAL_POST_INSTALL_CMD:=
 LOCAL_DIST_BUNDLED_BINARIES:=
 LOCAL_HAL_STATIC_LIBRARIES:=
+LOCAL_TEST_MODULE_TO_PROGUARD_WITH:=
 
 # Trim MAKEFILE_LIST so that $(call my-dir) doesn't need to
 # iterate over thousands of entries every time.
diff --git a/core/definitions.mk b/core/definitions.mk
index e1eb9f1..9a4a274 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -1884,7 +1884,8 @@
 ###########################################################
 define transform-jar-to-proguard
 @echo Proguard: $@
-$(hide) $(PROGUARD) -injars $< -outjars $@ $(PRIVATE_PROGUARD_FLAGS)
+$(hide) $(PROGUARD) -injars $< -outjars $@ $(PRIVATE_PROGUARD_FLAGS) \
+    $(addprefix -injars , $(PRIVATE_EXTRA_INPUT_JAR))
 endef
 
 ###########################################################
diff --git a/core/java.mk b/core/java.mk
index f237965..4f44770 100644
--- a/core/java.mk
+++ b/core/java.mk
@@ -430,8 +430,14 @@
 proguard_flag_files := $(addprefix $(LOCAL_PATH)/, $(LOCAL_PROGUARD_FLAG_FILES))
 LOCAL_PROGUARD_FLAGS += $(addprefix -include , $(proguard_flag_files))
 
+ifdef LOCAL_TEST_MODULE_TO_PROGUARD_WITH
+extra_input_jar := $(call intermediates-dir-for,APPS,$(LOCAL_TEST_MODULE_TO_PROGUARD_WITH),,COMMON)/classes.jar
+else
+extra_input_jar :=
+endif
+$(full_classes_proguard_jar): PRIVATE_EXTRA_INPUT_JAR := $(extra_input_jar)
 $(full_classes_proguard_jar): PRIVATE_PROGUARD_FLAGS := $(proguard_flags) $(LOCAL_PROGUARD_FLAGS)
-$(full_classes_proguard_jar) : $(full_classes_jar) $(proguard_flag_files) | $(ACP) $(PROGUARD)
+$(full_classes_proguard_jar) : $(full_classes_jar) $(extra_input_jar) $(proguard_flag_files) | $(ACP) $(PROGUARD)
 	$(call transform-jar-to-proguard)
 
 else  # LOCAL_PROGUARD_ENABLED not defined