diff --git a/crates/pathfinder/src/bin/pathfinder/config.rs b/crates/pathfinder/src/bin/pathfinder/config.rs
index b97417692d..d4c8a232c3 100644
--- a/crates/pathfinder/src/bin/pathfinder/config.rs
+++ b/crates/pathfinder/src/bin/pathfinder/config.rs
@@ -350,6 +350,7 @@ impl Color {
 
 #[derive(clap::ValueEnum, Debug, Clone, Copy, PartialEq)]
 pub enum RootRpcVersion {
+    V06,
     V07,
     V08,
 }
diff --git a/crates/pathfinder/src/bin/pathfinder/main.rs b/crates/pathfinder/src/bin/pathfinder/main.rs
index 0d1c97e5a1..8d12f08e45 100644
--- a/crates/pathfinder/src/bin/pathfinder/main.rs
+++ b/crates/pathfinder/src/bin/pathfinder/main.rs
@@ -256,6 +256,7 @@ Hint: This is usually caused by exceeding the file descriptor limit of your syst
     };
 
     let default_version = match config.rpc_root_version {
+        config::RootRpcVersion::V06 => pathfinder_rpc::RpcVersion::V06,
         config::RootRpcVersion::V07 => pathfinder_rpc::RpcVersion::V07,
         config::RootRpcVersion::V08 => pathfinder_rpc::RpcVersion::V08,
     };