diff --git a/main.star b/main.star
index 3d689f849..3141358f6 100644
--- a/main.star
+++ b/main.star
@@ -307,7 +307,7 @@ def run(plan, args={}):
                     }]
                     bolt_sidecar_config = {
                         "constraints_api_url": "{0}:{1}".format(
-                            bolt_sidecar.BOLT_SIDECAR_BASE_URL, bolt_sidecar.BOLT_SIDECAR_COMMITMENTS_API_PORT
+                            bolt_sidecar.BOLT_SIDECAR_BASE_URL, bolt_sidecar.BOLT_SIDECAR_BOOST_PROXY_PORT
                         ),
                         "beacon_api_url": all_cl_contexts[0].beacon_http_url,
                         "execution_api_url": "http://{0}:{1}".format(
diff --git a/src/mev/bolt_boost/bolt_boost_launcher.star b/src/mev/bolt_boost/bolt_boost_launcher.star
index b7d1da774..48c5011b5 100644
--- a/src/mev/bolt_boost/bolt_boost_launcher.star
+++ b/src/mev/bolt_boost/bolt_boost_launcher.star
@@ -2,17 +2,17 @@ shared_utils = import_module("../../shared_utils/shared_utils.star")
 mev_boost_context_module = import_module("../mev_boost/mev_boost_context.star")
 input_parser = import_module("../../package_io/input_parser.star")
 static_files = import_module("../../static_files/static_files.star")
+bolt_sidecar = import_module("../bolt_sidecar/bolt_sidecar_launcher.star")
 
 FLASHBOTS_MEV_BOOST_PROTOCOL = "TCP"
 
 SERVICE_NAME="bolt-boost"
 BOLT_BOOST_CONFIG_FILENAME="cb-bolt-config.toml"
 BOLT_BOOST_CONFIG_MOUNT_DIRPATH_ON_SERVICE="/config"
-BOLT_BOOST_BUILDER_PROXY_PORT=18551
 
 USED_PORTS = {
     "api": shared_utils.new_port_spec(
-        input_parser.FLASHBOTS_MEV_BOOST_PORT, FLASHBOTS_MEV_BOOST_PROTOCOL, wait="5s"
+        bolt_sidecar.BOLT_SIDECAR_BOOST_PROXY_PORT, "TCP", wait="5s"
     )
 }
 
@@ -40,10 +40,10 @@ def launch(
         global_node_selectors,
     )
 
-    mev_boost_service = plan.add_service(service_name, config)
+    bolt_boost_service = plan.add_service(service_name, config)
 
     return mev_boost_context_module.new_mev_boost_context(
-        mev_boost_service.ip_address, input_parser.FLASHBOTS_MEV_BOOST_PORT
+        bolt_boost_service.ip_address, bolt_boost_service.ports["api"].number
     )
 
 
@@ -112,6 +112,6 @@ def new_bolt_boost_config_template_data(image, relays_config, bolt_sidecar_confi
             "engine_api_url": bolt_sidecar_config["engine_api_url"],
             "jwt_hex": bolt_sidecar_config["jwt_hex"],
             "metrics_port": bolt_sidecar_config["metrics_port"],
-            "builder_proxy_port": BOLT_BOOST_BUILDER_PROXY_PORT,
+            "builder_proxy_port": bolt_sidecar.BOLT_SIDECAR_BOOST_PROXY_PORT,
         }
     }