diff --git a/Cargo.lock b/Cargo.lock
index 8b7d9a7..312ef71 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -155,13 +155,14 @@ checksum = "a26ae43d7bcc3b814de94796a5e736d4029efb0ee900c12e2d54c993ad1a1e07"
 
 [[package]]
 name = "els"
-version = "0.1.32-nightly.2"
+version = "0.1.33-nightly.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d64ff7aa566fa24ecc955cb17649f65eaa0401926a43785589864ebad8da4cd9"
+checksum = "8d90ce06b81836342feef59d9f1730340b39e32a9f488827c12919e3a9784cb2"
 dependencies = [
  "erg_common",
  "erg_compiler",
  "lsp-types",
+ "molc",
  "serde",
  "serde_json",
 ]
@@ -180,9 +181,9 @@ dependencies = [
 
 [[package]]
 name = "erg_common"
-version = "0.6.20-nightly.2"
+version = "0.6.21-nightly.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a5938643fcee96603ff9d1df6df3a5b088079d7e2122607fd9d374f60440cf02"
+checksum = "8c9e3dc0e21777787ea3fdc174f29fd6cdc8d7a6d671fcf7ed583c5f2c614956"
 dependencies = [
  "backtrace-on-stack-overflow",
  "parking_lot",
@@ -191,9 +192,9 @@ dependencies = [
 
 [[package]]
 name = "erg_compiler"
-version = "0.6.20-nightly.2"
+version = "0.6.21-nightly.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c88aaafbbe1eb293316e1e78af55acae6e840580f9b5a74aeed387a27c8c8988"
+checksum = "dfff095a4ce56412940dcf8d43e6897f85242365a9529c0d7e0cb10029668090"
 dependencies = [
  "erg_common",
  "erg_parser",
@@ -201,9 +202,9 @@ dependencies = [
 
 [[package]]
 name = "erg_parser"
-version = "0.6.20-nightly.2"
+version = "0.6.21-nightly.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9a129213e4217d11ac5420afdb8e63bcca553d1cc4900e977f7619c4e1c801a6"
+checksum = "8a76f132bafed4fd84fb90a1c8f3ecde6a238f462ab2e8ca18e9d19ac27fd07c"
 dependencies = [
  "erg_common",
  "unicode-xid",
@@ -425,6 +426,17 @@ dependencies = [
  "adler",
 ]
 
+[[package]]
+name = "molc"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a19b669aab31ca7552fc43cb9ab08e325113aa090f7bf97a2112b3d6241ba898"
+dependencies = [
+ "lsp-types",
+ "serde",
+ "serde_json",
+]
+
 [[package]]
 name = "nix"
 version = "0.23.2"
@@ -579,7 +591,7 @@ dependencies = [
 
 [[package]]
 name = "py2erg"
-version = "0.0.43"
+version = "0.0.44"
 dependencies = [
  "erg_common",
  "erg_compiler",
@@ -589,7 +601,7 @@ dependencies = [
 
 [[package]]
 name = "pylyzer"
-version = "0.0.43"
+version = "0.0.44"
 dependencies = [
  "els",
  "erg_common",
diff --git a/Cargo.toml b/Cargo.toml
index 1be8f9b..a941ac8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,16 +15,16 @@ members = [
 ]
 
 [workspace.package]
-version = "0.0.43"
+version = "0.0.44"
 authors = ["Shunsuke Shibayama <sbym1346@gmail.com>"]
 license = "MIT OR Apache-2.0"
 edition = "2021"
 repository = "https://github.com/mtshiba/pylyzer"
 
 [workspace.dependencies]
-erg_common = { version = "0.6.20-nightly.2", features = ["py_compat", "els"] }
-erg_compiler = { version = "0.6.20-nightly.2", features = ["py_compat", "els"] }
-els = { version = "0.1.32-nightly.2", features = ["py_compat"] }
+erg_common = { version = "0.6.21-nightly.1", features = ["py_compat", "els"] }
+erg_compiler = { version = "0.6.21-nightly.1", features = ["py_compat", "els"] }
+els = { version = "0.1.33-nightly.1", features = ["py_compat"] }
 rustpython-parser = { version = "0.3.0", features = ["all-nodes-with-ranges", "location"] }
 rustpython-ast = { version = "0.3.0", features = ["all-nodes-with-ranges", "location"] }
 # rustpython-parser = { git = "https://github.com/RustPython/Parser", version = "0.3.0", features = ["all-nodes-with-ranges", "location"] }
@@ -49,7 +49,7 @@ erg_common = { workspace = true }
 els = { workspace = true }
 rustpython-parser = { workspace = true }
 rustpython-ast = { workspace = true }
-py2erg = { version = "0.0.43", path = "./crates/py2erg" }
+py2erg = { version = "0.0.44", path = "./crates/py2erg" }
 
 [lib]
 path = "src/lib.rs"
diff --git a/src/main.rs b/src/main.rs
index cf4bffa..06edf37 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -10,7 +10,7 @@ use erg_common::spawn::exec_new_thread;
 fn run() {
     let cfg = config::parse_args();
     if cfg.mode == ErgMode::LanguageServer {
-        let mut lang_server = Server::<PythonAnalyzer, SimplePythonParser>::new(cfg);
+        let mut lang_server = Server::<PythonAnalyzer, SimplePythonParser>::new(cfg, None);
         lang_server.run().unwrap_or_else(|_| {
             std::process::exit(1);
         });