diff --git a/smoke-test/spring-boot-smoke-test-data-redis/src/main/java/smoketest/data/redis/PersonHash.java b/smoke-test/spring-boot-smoke-test-data-redis/src/main/java/smoketest/data/redis/PersonHash.java
index 7342973e870..ec7789282f8 100644
--- a/smoke-test/spring-boot-smoke-test-data-redis/src/main/java/smoketest/data/redis/PersonHash.java
+++ b/smoke-test/spring-boot-smoke-test-data-redis/src/main/java/smoketest/data/redis/PersonHash.java
@@ -16,6 +16,8 @@
 
 package smoketest.data.redis;
 
+import org.jspecify.annotations.Nullable;
+
 import org.springframework.data.annotation.Id;
 import org.springframework.data.redis.core.RedisHash;
 
@@ -23,23 +25,23 @@ import org.springframework.data.redis.core.RedisHash;
 public class PersonHash {
 
 	@Id
-	private String id;
+	private @Nullable String id;
 
-	private String description;
+	private @Nullable String description;
 
-	public String getId() {
+	public @Nullable String getId() {
 		return this.id;
 	}
 
-	public void setId(String id) {
+	public void setId(@Nullable String id) {
 		this.id = id;
 	}
 
-	public String getDescription() {
+	public @Nullable String getDescription() {
 		return this.description;
 	}
 
-	public void setDescription(String description) {
+	public void setDescription(@Nullable String description) {
 		this.description = description;
 	}
 
diff --git a/smoke-test/spring-boot-smoke-test-data-redis/src/main/java/smoketest/data/redis/package-info.java b/smoke-test/spring-boot-smoke-test-data-redis/src/main/java/smoketest/data/redis/package-info.java
new file mode 100644
index 00000000000..c7563b7b7d5
--- /dev/null
+++ b/smoke-test/spring-boot-smoke-test-data-redis/src/main/java/smoketest/data/redis/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012-present the original author or authors.
+ *
+ * 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
+ *
+ *      https://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.
+ */
+
+@NullMarked
+package smoketest.data.redis;
+
+import org.jspecify.annotations.NullMarked;