diff --git a/tests/Android.bp b/tests/Android.bp
index 9bb4bf5..4467994 100644
--- a/tests/Android.bp
+++ b/tests/Android.bp
@@ -22,4 +22,5 @@
     "versioning/1.0",
     "versioning/2.2",
     "versioning/2.3",
+    "versioning/2.4",
 ]
diff --git a/tests/versioning/2.3/Android.bp b/tests/versioning/2.3/Android.bp
index 122c484..3cc2076 100644
--- a/tests/versioning/2.3/Android.bp
+++ b/tests/versioning/2.3/Android.bp
@@ -63,6 +63,7 @@
         "libcutils",
         "android.hardware.tests.versioning@1.0",
         "android.hardware.tests.versioning@2.2",
+        "android.hidl.base@1.0",
     ],
     export_shared_lib_headers: [
         "libhidlbase",
@@ -71,5 +72,6 @@
         "libutils",
         "android.hardware.tests.versioning@1.0",
         "android.hardware.tests.versioning@2.2",
+        "android.hidl.base@1.0",
     ],
 }
diff --git a/tests/versioning/2.4/Android.bp b/tests/versioning/2.4/Android.bp
new file mode 100644
index 0000000..9d8303c
--- /dev/null
+++ b/tests/versioning/2.4/Android.bp
@@ -0,0 +1,63 @@
+// This file is autogenerated by hidl-gen. Do not edit manually.
+
+filegroup {
+    name: "android.hardware.tests.versioning@2.4_hal",
+    srcs: [
+        "IFoo.hal",
+    ],
+}
+
+genrule {
+    name: "android.hardware.tests.versioning@2.4_genc++",
+    tools: ["hidl-gen"],
+    cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.versioning@2.4",
+    srcs: [
+        ":android.hardware.tests.versioning@2.4_hal",
+    ],
+    out: [
+        "android/hardware/tests/versioning/2.4/FooAll.cpp",
+    ],
+}
+
+genrule {
+    name: "android.hardware.tests.versioning@2.4_genc++_headers",
+    tools: ["hidl-gen"],
+    cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.versioning@2.4",
+    srcs: [
+        ":android.hardware.tests.versioning@2.4_hal",
+    ],
+    out: [
+        "android/hardware/tests/versioning/2.4/IFoo.h",
+        "android/hardware/tests/versioning/2.4/IHwFoo.h",
+        "android/hardware/tests/versioning/2.4/BnHwFoo.h",
+        "android/hardware/tests/versioning/2.4/BpHwFoo.h",
+        "android/hardware/tests/versioning/2.4/BsFoo.h",
+    ],
+}
+
+cc_library_shared {
+    name: "android.hardware.tests.versioning@2.4",
+    generated_sources: ["android.hardware.tests.versioning@2.4_genc++"],
+    generated_headers: ["android.hardware.tests.versioning@2.4_genc++_headers"],
+    export_generated_headers: ["android.hardware.tests.versioning@2.4_genc++_headers"],
+    shared_libs: [
+        "libhidlbase",
+        "libhidltransport",
+        "libhwbinder",
+        "liblog",
+        "libutils",
+        "libcutils",
+        "android.hardware.tests.versioning@2.2",
+        "android.hardware.tests.versioning@2.3",
+        "android.hidl.base@1.0",
+    ],
+    export_shared_lib_headers: [
+        "libhidlbase",
+        "libhidltransport",
+        "libhwbinder",
+        "libutils",
+        "android.hardware.tests.versioning@2.2",
+        "android.hardware.tests.versioning@2.3",
+        "android.hidl.base@1.0",
+    ],
+}
diff --git a/tests/versioning/2.4/Android.mk b/tests/versioning/2.4/Android.mk
new file mode 100644
index 0000000..e41397f
--- /dev/null
+++ b/tests/versioning/2.4/Android.mk
@@ -0,0 +1,80 @@
+# This file is autogenerated by hidl-gen. Do not edit manually.
+
+LOCAL_PATH := $(call my-dir)
+
+################################################################################
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.tests.versioning@2.4-java
+LOCAL_MODULE_CLASS := JAVA_LIBRARIES
+
+intermediates := $(call local-generated-sources-dir, COMMON)
+
+HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
+
+LOCAL_JAVA_LIBRARIES := \
+    android.hardware.tests.versioning@2.2-java \
+    android.hardware.tests.versioning@2.3-java \
+    android.hidl.base@1.0-java \
+
+
+#
+# Build IFoo.hal
+#
+GEN := $(intermediates)/android/hardware/tests/versioning/V2_4/IFoo.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IFoo.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.tests.versioning@2.4::IFoo
+
+$(GEN): $(LOCAL_PATH)/IFoo.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+include $(BUILD_JAVA_LIBRARY)
+
+
+################################################################################
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.tests.versioning@2.4-java-static
+LOCAL_MODULE_CLASS := JAVA_LIBRARIES
+
+intermediates := $(call local-generated-sources-dir, COMMON)
+
+HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
+
+LOCAL_STATIC_JAVA_LIBRARIES := \
+    android.hardware.tests.versioning@2.2-java-static \
+    android.hardware.tests.versioning@2.3-java-static \
+    android.hidl.base@1.0-java-static \
+
+
+#
+# Build IFoo.hal
+#
+GEN := $(intermediates)/android/hardware/tests/versioning/V2_4/IFoo.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IFoo.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.tests.versioning@2.4::IFoo
+
+$(GEN): $(LOCAL_PATH)/IFoo.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+include $(BUILD_STATIC_JAVA_LIBRARY)
+
+
+
+include $(call all-makefiles-under,$(LOCAL_PATH))
diff --git a/tests/versioning/2.4/IFoo.hal b/tests/versioning/2.4/IFoo.hal
new file mode 100644
index 0000000..358b56f
--- /dev/null
+++ b/tests/versioning/2.4/IFoo.hal
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.tests.versioning@2.4;
+
+import @2.3::IFoo;
+
+// Must extend @2.3::IFoo.
+interface IFoo extends @2.3::IFoo {
+
+};