diff --git a/base/include/hidl/HidlSupport.h b/base/include/hidl/HidlSupport.h
index 8c93998..7a5183b 100644
--- a/base/include/hidl/HidlSupport.h
+++ b/base/include/hidl/HidlSupport.h
@@ -845,6 +845,10 @@
         return (mMajor == other.get_major() && mMinor == other.get_minor());
     }
 
+    bool operator!=(const hidl_version& other) const {
+        return !(*this == other);
+    }
+
     bool operator<(const hidl_version& other) const {
         return (mMajor < other.get_major() ||
                 (mMajor == other.get_major() && mMinor < other.get_minor()));
diff --git a/test_main.cpp b/test_main.cpp
index 0de46ec..7f80d71 100644
--- a/test_main.cpp
+++ b/test_main.cpp
@@ -390,12 +390,15 @@
     hidl_version v3_0b{3,0};
 
     EXPECT_TRUE(v1_0 < v2_0);
+    EXPECT_TRUE(v1_0 != v2_0);
     EXPECT_TRUE(v2_0 < v2_1);
     EXPECT_TRUE(v2_1 < v3_0);
     EXPECT_TRUE(v2_0 > v1_0);
+    EXPECT_TRUE(v2_0 != v1_0);
     EXPECT_TRUE(v2_1 > v2_0);
     EXPECT_TRUE(v3_0 > v2_1);
     EXPECT_TRUE(v3_0 == v3_0b);
+    EXPECT_FALSE(v3_0 != v3_0b);
     EXPECT_TRUE(v3_0 <= v3_0b);
     EXPECT_TRUE(v2_2 <= v3_0);
     EXPECT_TRUE(v3_0 >= v3_0b);