diff --git a/spring-session-data-redis/src/integration-test/java/org/springframework/session/data/redis/RedisIndexedSessionRepositoryITests.java b/spring-session-data-redis/src/integration-test/java/org/springframework/session/data/redis/RedisIndexedSessionRepositoryITests.java
index a649148f..4fcf13d9 100644
--- a/spring-session-data-redis/src/integration-test/java/org/springframework/session/data/redis/RedisIndexedSessionRepositoryITests.java
+++ b/spring-session-data-redis/src/integration-test/java/org/springframework/session/data/redis/RedisIndexedSessionRepositoryITests.java
@@ -18,6 +18,7 @@ package org.springframework.session.data.redis;
 
 import java.nio.charset.StandardCharsets;
 import java.util.Map;
+import java.util.Set;
 import java.util.UUID;
 
 import org.junit.jupiter.api.BeforeEach;
@@ -134,6 +135,22 @@ class RedisIndexedSessionRepositoryITests extends AbstractRedisITests {
 				.isEqualTo(expectedAttributeValue);
 	}
 
+	@Test
+	void removeAttributeRemovedAttributeKey() {
+		RedisSession toSave = this.repository.createSession();
+		toSave.setAttribute("a", "b");
+		this.repository.save(toSave);
+
+		toSave.removeAttribute("a");
+		this.repository.save(toSave);
+
+		String id = toSave.getId();
+		String key = "RedisIndexedSessionRepositoryITests:sessions:" + id;
+
+		Set<Map.Entry<Object, Object>> entries = this.redis.boundHashOps(key).entries().entrySet();
+		assertThat(entries).extracting(Map.Entry::getKey).doesNotContain("sessionAttr:a");
+	}
+
 	@Test
 	void putAllOnSingleAttrDoesNotRemoveOld() {
 		RedisSession toSave = this.repository.createSession();
diff --git a/spring-session-data-redis/src/main/java/org/springframework/session/data/redis/RedisIndexedSessionRepository.java b/spring-session-data-redis/src/main/java/org/springframework/session/data/redis/RedisIndexedSessionRepository.java
index 126316d0..c30790e3 100644
--- a/spring-session-data-redis/src/main/java/org/springframework/session/data/redis/RedisIndexedSessionRepository.java
+++ b/spring-session-data-redis/src/main/java/org/springframework/session/data/redis/RedisIndexedSessionRepository.java
@@ -792,7 +792,8 @@ public class RedisIndexedSessionRepository
 				return;
 			}
 			String sessionId = getId();
-			getSessionBoundHashOperations(sessionId).putAll(this.delta);
+			BoundHashOperations<Object, Object, Object> boundHashOperations = getSessionBoundHashOperations(sessionId);
+			boundHashOperations.putAll(this.delta);
 			String principalSessionKey = getSessionAttrNameKey(
 					FindByIndexNameSessionRepository.PRINCIPAL_NAME_INDEX_NAME);
 			String securityPrincipalSessionKey = getSessionAttrNameKey(SPRING_SECURITY_CONTEXT);
@@ -811,6 +812,11 @@ public class RedisIndexedSessionRepository
 							.add(sessionId);
 				}
 			}
+			for (final Map.Entry<String, Object> attribute : this.delta.entrySet()) {
+				if (attribute.getValue() == null) {
+					boundHashOperations.delete(attribute.getKey());
+				}
+			}
 
 			this.delta = new HashMap<>(this.delta.size());