diff --git a/mod.d.ts b/mod.d.ts
index db0b29a..25cad1e 100644
--- a/mod.d.ts
+++ b/mod.d.ts
@@ -170,24 +170,24 @@ export interface LogicalReplicationOptions {
 }
 
 export interface ReplicationStream extends AsyncIterable<ReplicationChunk> {
-  /** Confirms receipt of replication packet by lsn.
-   * Use {@link ReplicationMessage.lsn} to get packet lsn. */
+  /** Confirms receipt of replication message by lsn.
+   * Use {@link ReplicationMessage.lsn} to get lsn. */
   ack(lsn: string): undefined;
   /**
-   * Decodes {@link ReplicationMessage.data} and yields upgraded pgoutput packets.
+   * Decodes {@link ReplicationMessage.data} and yields upgraded pgoutput messages.
    * Use this method if replication is started with pgoutput slot. */
   pgoutputDecode(): AsyncIterable<PgotputChunk>;
 }
 
 export interface ReplicationChunk {
-  readonly endLsn: string;
-  readonly time: bigint;
   readonly messages: ReplicationMessage[];
+  readonly lastLsn: string;
+  readonly lastTime: bigint;
 }
 
 export interface ReplicationMessage {
-  /** Log Serial Number of packet.
-   * Use it for {@link ReplicationStream.ack} to confirm receipt of packet. */
+  /** Log Serial Number of message.
+   * Use it for {@link ReplicationStream.ack} to confirm receipt of message. */
    readonly lsn: string | null;
    readonly endLsn: string | null;
    /** microseconds since unix epoch */
diff --git a/mod.js b/mod.js
index 3e87a66..d9e13d6 100644
--- a/mod.js
+++ b/mod.js
@@ -1605,10 +1605,10 @@ class ReplicationStream extends BinaryReader {
               break;
             case 'PrimaryKeepaliveMessage':
               shouldAck = shouldAck || msg.shouldReply;
+              // TODO msg.endLsn not exposed
               break;
           }
           if (lastLsn < msg.lsn) lastLsn = msg.lsn;
-          if (lastLsn < msg.endLsn) lastLsn = msg.endLsn;
           if (lastTime < msg.time) lastTime = msg.time;
         }
         if (shouldAck) {
diff --git a/readme.md b/readme.md
index 3c0361b..2a65460 100644
--- a/readme.md
+++ b/readme.md
@@ -458,8 +458,7 @@ for (const notice of out.notices) {
 
 ```js
 for await (const chunk of replstream.pgoutputDecode()) {
-
-  // (string) Lsn of last received message.
+  // (string) Last valid received lsn.
   // Use it for replstream.ack() to confirm receipt of whole chunk.
   chunk.lastLsn;
   // (bigint) Time of last received message. Microseconds since unix epoch.
diff --git a/test/deno.dockerfile b/test/deno.dockerfile
index e94fadf..069dbb1 100644
--- a/test/deno.dockerfile
+++ b/test/deno.dockerfile
@@ -1,4 +1,4 @@
-FROM denoland/deno:alpine-1.23.4
+FROM denoland/deno:alpine-1.25.4
 COPY test_deno.js /tmp/test/
 RUN set -x \
  && touch /tmp/mod.js \