diff --git a/index.ts b/index.ts
index c98ffad..76a540b 100644
--- a/index.ts
+++ b/index.ts
@@ -66,6 +66,9 @@ export async function action(options: CSVRunOptions ) {
   let resolvedStartBlock = 0;
   let maxParallelWorkers = 0;
   let runningJobs = 0;
+  let last_seconds = 0;
+  let start = Math.floor(Date.now() / 1000); // seconds
+  let last_update = 0;
 
   emitter.on("session", (session) => {
     fs.writeFileSync(sessionFile, JSON.stringify(session, null, 2));
@@ -96,6 +99,7 @@ export async function action(options: CSVRunOptions ) {
     const { block_num, block_id, timestamp, seconds } = parseClock(clock);
     last_block_num = block_num;
     last_timestamp = timestamp;
+    last_seconds = seconds;
 
     // block header
     for ( const entityChange of EntityChanges.parse(data).entityChanges ) {
@@ -132,7 +136,12 @@ export async function action(options: CSVRunOptions ) {
   });
 
   function log() {
-    logUpdate(JSON.stringify({last_block_num, last_timestamp, blocks, rows, totalBytesRead, totalBytesWritten, runningJobs}));
+    const now = Math.floor(Date.now() / 1000);
+    if ( last_update != now) {
+      last_update = now;
+      const blocksPerSecond = Math.floor(blocks / (last_update - start));
+      logUpdate(JSON.stringify({last_block_num, last_timestamp, blocks, rows, blocksPerSecond, totalBytesRead, totalBytesWritten, runningJobs}));
+    }
   }
 
   fileCursor.onCursor(emitter, cursorFile);
diff --git a/package-lock.json b/package-lock.json
index 85c64ce..7f502bc 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,16 +1,16 @@
 {
     "name": "substreams-sink-csv",
-    "version": "0.2.3",
+    "version": "0.2.7",
     "lockfileVersion": 3,
     "requires": true,
     "packages": {
         "": {
             "name": "substreams-sink-csv",
-            "version": "0.2.3",
+            "version": "0.2.7",
             "dependencies": {
                 "@substreams/sink-entity-changes": "^0.3.9",
                 "log-update": "latest",
-                "substreams-sink": "^0.15.1"
+                "substreams-sink": "^0.15.2"
             },
             "bin": {
                 "substreams-sink-csv": "dist/bin/cli.js"
@@ -565,9 +565,9 @@
             }
         },
         "node_modules/substreams-sink": {
-            "version": "0.15.1",
-            "resolved": "https://registry.npmjs.org/substreams-sink/-/substreams-sink-0.15.1.tgz",
-            "integrity": "sha512-oKm4Aln3AoYienp2lAtVW4gl2FEH33FK0riCh1aaOyGJq8N+JwM2yFf38qVI+/mnX53tEXgi+ema/NfeF0zY0A==",
+            "version": "0.15.2",
+            "resolved": "https://registry.npmjs.org/substreams-sink/-/substreams-sink-0.15.2.tgz",
+            "integrity": "sha512-nbvdn1a4pcOlf2NIkzTcZS2aa5Cv0pBWJ17jxvBoSRyHDCw/tTFivsJAwsrdNGgs7srQLhGVtn1nwmxezsR+UA==",
             "dependencies": {
                 "@substreams/core": "^0.15.1",
                 "@substreams/manifest": "^0.14.1",
diff --git a/package.json b/package.json
index a7b49e3..36b55b7 100644
--- a/package.json
+++ b/package.json
@@ -34,7 +34,7 @@
     "dependencies": {
         "@substreams/sink-entity-changes": "^0.3.9",
         "log-update": "latest",
-        "substreams-sink": "^0.15.1"
+        "substreams-sink": "^0.15.2"
     },
     "devDependencies": {
         "@types/bun": "latest",