diff --git a/roles/tx_submit_api/defaults/main.yml b/roles/tx_submit_api/defaults/main.yml
index 07ef7e6..c3d4867 100644
--- a/roles/tx_submit_api/defaults/main.yml
+++ b/roles/tx_submit_api/defaults/main.yml
@@ -3,7 +3,7 @@
 tx_submit_api_install_method: 'docker'
 
 # Cardano Submit API version
-tx_submit_api_version: '0.20.3'
+tx_submit_api_version: '0.20.4'
 
 # Base host directory for node data
 cardano_node_dir: /opt/cardano