diff --git a/.changelog/unreleased/miscellaneous/4712-comet-max-tx-size.md b/.changelog/unreleased/miscellaneous/4712-comet-max-tx-size.md
new file mode 100644
index 00000000000..d5cacb9db6a
--- /dev/null
+++ b/.changelog/unreleased/miscellaneous/4712-comet-max-tx-size.md
@@ -0,0 +1,2 @@
+- Make CometBFT max_tx_bytes configurable
+  ([\#4712](https://github.com/anoma/namada/issues/4712))
\ No newline at end of file
diff --git a/crates/node/src/tendermint_node.rs b/crates/node/src/tendermint_node.rs
index 4f73b7726fa..e1107809557 100644
--- a/crates/node/src/tendermint_node.rs
+++ b/crates/node/src/tendermint_node.rs
@@ -290,7 +290,7 @@ async fn update_tendermint_config(
         // 1 MiB is a reasonable value that allows governance proposal txs
         // containing wasm code to be proposed by a leading validator
         // during some round's start
-        config.mempool.max_tx_bytes = 1024 * 1024;
+        // https://github.com/cometbft/cometbft/blob/c653eee08d7f2c44bd87fcca0b8a16666cd08fee/config/config.go#L1016
 
         // Hold 50x the max amount of txs in a block.
         #[allow(clippy::arithmetic_side_effects)]