diff --git a/util/common/src/main/java/org/hibernate/search/util/common/serialization/spi/SerializationUtils.java b/util/common/src/main/java/org/hibernate/search/util/common/serialization/spi/SerializationUtils.java
index a22a6fe8681..61307c9125e 100644
--- a/util/common/src/main/java/org/hibernate/search/util/common/serialization/spi/SerializationUtils.java
+++ b/util/common/src/main/java/org/hibernate/search/util/common/serialization/spi/SerializationUtils.java
@@ -10,6 +10,7 @@
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 
+@Deprecated(since = "8.1", forRemoval = true)
 public final class SerializationUtils {
 
 	private SerializationUtils() {
diff --git a/util/common/src/test/java/org/hibernate/search/util/common/serialization/spi/SerializationUtilsTest.java b/util/common/src/test/java/org/hibernate/search/util/common/serialization/spi/SerializationUtilsTest.java
new file mode 100644
index 00000000000..8f78f607a2e
--- /dev/null
+++ b/util/common/src/test/java/org/hibernate/search/util/common/serialization/spi/SerializationUtilsTest.java
@@ -0,0 +1,28 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.search.util.common.serialization.spi;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.io.Serializable;
+
+import org.junit.jupiter.api.Test;
+
+@Deprecated(since = "8.1", forRemoval = true)
+class SerializationUtilsTest {
+
+	@SuppressWarnings({ "removal", "deprecation" })
+	@Test
+	void smoke() {
+		MyRecord test = new MyRecord( 1, "smth" );
+		byte[] serialized = SerializationUtils.serialize( test );
+
+		MyRecord deserialized = SerializationUtils.deserialize( MyRecord.class, serialized );
+		assertThat( deserialized ).isEqualTo( test );
+	}
+
+	record MyRecord(int number, String string) implements Serializable {
+	}
+}