diff --git a/topic/src/main/java/tech/ydb/topic/read/impl/DisjointOffsetRangeSet.java b/topic/src/main/java/tech/ydb/topic/read/impl/DisjointOffsetRangeSet.java
index 5f0988487..41ec47ec7 100644
--- a/topic/src/main/java/tech/ydb/topic/read/impl/DisjointOffsetRangeSet.java
+++ b/topic/src/main/java/tech/ydb/topic/read/impl/DisjointOffsetRangeSet.java
@@ -5,7 +5,7 @@
 import java.util.List;
 import java.util.Map;
 import java.util.NavigableMap;
-import java.util.concurrent.ConcurrentSkipListMap;
+import java.util.TreeMap;
 
 import tech.ydb.topic.read.OffsetsRange;
 
@@ -13,7 +13,7 @@
  * @author Nikolay Perfilov
  */
 public class DisjointOffsetRangeSet {
-    private final NavigableMap<Long, OffsetsRangeImpl> ranges = new ConcurrentSkipListMap<>();
+    private final NavigableMap<Long, OffsetsRangeImpl> ranges = new TreeMap<>();
 
     public void add(OffsetsRange rangeToCommit) {
         Map.Entry<Long, OffsetsRangeImpl> floorEntry = ranges.floorEntry(rangeToCommit.getStart());