diff --git a/core/clear_vars.mk b/core/clear_vars.mk
index 8863fe6..2419260 100644
--- a/core/clear_vars.mk
+++ b/core/clear_vars.mk
@@ -105,6 +105,7 @@
 LOCAL_PROGUARD_ENABLED:= # '',full,custom,nosystem,disabled,obfuscation,optimization
 LOCAL_PROGUARD_FLAGS:=
 LOCAL_PROGUARD_FLAG_FILES:=
+LOCAL_TEST_MODULE_TO_PROGUARD_WITH:=
 LOCAL_EMMA_COVERAGE_FILTER:=
 LOCAL_WARNINGS_ENABLE:=
 LOCAL_FULL_MANIFEST_FILE:=
diff --git a/core/definitions.mk b/core/definitions.mk
index 7c29e30..9774a68 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -1929,7 +1929,8 @@
 ###########################################################
 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 95ec8f5..8863ac2 100644
--- a/core/java.mk
+++ b/core/java.mk
@@ -435,8 +435,14 @@
 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