diff --git a/.changelog/24688.txt b/.changelog/24688.txt
new file mode 100644
index 00000000000..80967dc1966
--- /dev/null
+++ b/.changelog/24688.txt
@@ -0,0 +1,3 @@
+```release-note:bug
+resource/aws_elasticache_replication_group: Fix perpetual diff on `auto_minor_version_upgrade`
+```
diff --git a/internal/service/elasticache/replication_group.go b/internal/service/elasticache/replication_group.go
index 79b1a8e5837..27c9568aa2e 100644
--- a/internal/service/elasticache/replication_group.go
+++ b/internal/service/elasticache/replication_group.go
@@ -62,7 +62,7 @@ func ResourceReplicationGroup() *schema.Resource {
 			"auto_minor_version_upgrade": {
 				Type:         nullable.TypeNullableBool,
 				Optional:     true,
-				Default:      "true",
+				Computed:     true,
 				ValidateFunc: nullable.ValidateTypeStringNullableBool,
 			},
 			"automatic_failover_enabled": {