diff --git a/bindings/nodejs/examples/client/06-simple-block.ts b/bindings/nodejs/examples/client/06-simple-block.ts
index d3086c4cde..1a157fca45 100644
--- a/bindings/nodejs/examples/client/06-simple-block.ts
+++ b/bindings/nodejs/examples/client/06-simple-block.ts
@@ -22,7 +22,7 @@ async function run() {
 
     try {
         // Create block with no payload
-        // TODO: have a way in the bindings to send an empty block
+        // TODO: have a way in the bindings to send an empty block https://github.com/iotaledger/iota-sdk/issues/647
         const blockIdAndBlock = await client.postBlockPayload(
             new TaggedDataPayload(utf8ToHex('Hello'), utf8ToHex('Tangle')),
         );
diff --git a/bindings/nodejs/tests/client/examples.spec.ts b/bindings/nodejs/tests/client/examples.spec.ts
index 2701ea0a20..dcd7d848c1 100644
--- a/bindings/nodejs/tests/client/examples.spec.ts
+++ b/bindings/nodejs/tests/client/examples.spec.ts
@@ -139,7 +139,7 @@ describe.skip('Main examples', () => {
         ).toBe(200);
     });
 
-    // TODO: have a way in the bindings to send an empty block
+    // TODO: have a way in the bindings to send an empty block https://github.com/iotaledger/iota-sdk/issues/647
     // it('sends a block', async () => {
     //     const blockIdAndBlock = await client.buildAndPostBlock();
 
diff --git a/bindings/python/examples/client/06_simple_block.py b/bindings/python/examples/client/06_simple_block.py
index 11d426d7bd..ad69a7e7f1 100644
--- a/bindings/python/examples/client/06_simple_block.py
+++ b/bindings/python/examples/client/06_simple_block.py
@@ -10,6 +10,6 @@
 client = Client(nodes=[node_url])
 
 # Create and post a block without payload
-# TODO: have a way in the bindings to send an empty block
+# TODO: have a way in the bindings to send an empty block https://github.com/iotaledger/iota-sdk/issues/647
 block = client.submit_payload(TaggedDataPayload(utf8_to_hex("tag"), utf8_to_hex("data")))
 print(f'Empty block sent: {os.environ["EXPLORER_URL"]}/block/{block[0]}')
\ No newline at end of file