diff --git a/security/keymint/support/Android.bp b/security/keymint/support/Android.bp
index efd6fc7800..8d7731cd55 100644
--- a/security/keymint/support/Android.bp
+++ b/security/keymint/support/Android.bp
@@ -84,6 +84,7 @@ cc_test {
         "android.hardware.security.rkp-V3-ndk",
         "libgmock",
         "libgtest_main",
+        "libkeymint_remote_prov_support",
     ],
     defaults: [
         "keymint_use_latest_hal_aidl_ndk_shared",
@@ -95,6 +96,5 @@ cc_test {
         "libcrypto",
         "libjsoncpp",
         "libkeymaster_portable",
-        "libkeymint_remote_prov_support",
     ],
 }
diff --git a/security/keymint/support/remote_prov_utils.cpp b/security/keymint/support/remote_prov_utils.cpp
index 7e164fd51a..ea0fbd8e91 100644
--- a/security/keymint/support/remote_prov_utils.cpp
+++ b/security/keymint/support/remote_prov_utils.cpp
@@ -417,6 +417,7 @@ ErrMsgOr<std::vector<BccEntryData>> validateBcc(const cppbor::Array* bcc) {
 
 JsonOutput jsonEncodeCsrWithBuild(const std::string instance_name, const cppbor::Array& csr) {
     const std::string kFingerprintProp = "ro.build.fingerprint";
+    const std::string kSerialNoProp = "ro.serialno";
 
     if (!::android::base::WaitForPropertyCreation(kFingerprintProp)) {
         return JsonOutput::Error("Unable to read build fingerprint");
@@ -441,6 +442,7 @@ JsonOutput jsonEncodeCsrWithBuild(const std::string instance_name, const cppbor:
     Json::Value json(Json::objectValue);
     json["name"] = instance_name;
     json["build_fingerprint"] = ::android::base::GetProperty(kFingerprintProp, /*default=*/"");
+    json["serialno"] = ::android::base::GetProperty(kSerialNoProp, /*default=*/"");
     json["csr"] = base64.data();  // Boring writes a NUL-terminated c-string
 
     Json::StreamWriterBuilder factory;
diff --git a/security/keymint/support/remote_prov_utils_test.cpp b/security/keymint/support/remote_prov_utils_test.cpp
index 0250cd6c7d..eaaba455cc 100644
--- a/security/keymint/support/remote_prov_utils_test.cpp
+++ b/security/keymint/support/remote_prov_utils_test.cpp
@@ -191,7 +191,8 @@ TEST(RemoteProvUtilsTest, JsonEncodeCsr) {
 
     std::string expected = R"({"build_fingerprint":")" +
                            ::android::base::GetProperty("ro.build.fingerprint", /*default=*/"") +
-                           R"(","csr":"gQE=","name":"test"})";
+                           R"(","csr":"gQE=","name":"test","serialno":")" +
+                           ::android::base::GetProperty("ro.serialno", /*default=*/"") + R"("})";
 
     ASSERT_EQ(json, expected);
 }