diff --git a/Cargo.lock b/Cargo.lock
index 17e3456..7965a87 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "addr2line"
@@ -150,9 +150,9 @@ checksum = "60b1af1c220855b6ceac025d3f6ecdd2b7c4894bfe9cd9bda4fbb4bc7c0d4cf0"
 
 [[package]]
 name = "els"
-version = "0.1.61-nightly.0"
+version = "0.1.61-nightly.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "244a1a121d8ab0ab571e829c2527a8be32593a7b4f41a43d49a67ddb65aa6aa1"
+checksum = "5b705181f9b147925f775655b5aea6b0c88ad54269c53f411304fc087892b9c5"
 dependencies = [
  "erg_common",
  "erg_compiler",
@@ -166,9 +166,9 @@ dependencies = [
 
 [[package]]
 name = "erg_common"
-version = "0.6.49-nightly.0"
+version = "0.6.49-nightly.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d60194637dad5c998f15dc910df97c55ee7f777a460e177170f71fd47f668182"
+checksum = "6d1568d2f4c9b8ea39874c331400d3a6412d00bd6991a93fa221502946ff9705"
 dependencies = [
  "backtrace-on-stack-overflow",
  "erg_proc_macros",
@@ -179,9 +179,9 @@ dependencies = [
 
 [[package]]
 name = "erg_compiler"
-version = "0.6.49-nightly.0"
+version = "0.6.49-nightly.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e5b028e94363b80c4d9ed7ae7bd46b11afba31f32c5fbf52a9978f9a3db501a2"
+checksum = "faa06833a44ba70f90441adfb278604a8fd425e3266482c61907099b9323480b"
 dependencies = [
  "erg_common",
  "erg_parser",
@@ -189,9 +189,9 @@ dependencies = [
 
 [[package]]
 name = "erg_parser"
-version = "0.6.49-nightly.0"
+version = "0.6.49-nightly.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cb479b79c0276dd57cbaa3143e11bce95043d620ad3783f29e144b6a84671000"
+checksum = "9c544aa6070b30e73b0acef20d41a731ae1839346ae6967993e68bd7d6001d85"
 dependencies = [
  "erg_common",
  "erg_proc_macros",
@@ -200,9 +200,9 @@ dependencies = [
 
 [[package]]
 name = "erg_proc_macros"
-version = "0.6.49-nightly.0"
+version = "0.6.49-nightly.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5acc0616d02c541916ae426268da2d92877a894fbb94ce10dfe9dd5ce0898b9e"
+checksum = "d7472e453f644bd4cfd93b8f6258dd7a8c8aa89f08d40db27c2a060dd423d86d"
 dependencies = [
  "quote",
  "syn 1.0.109",
diff --git a/Cargo.toml b/Cargo.toml
index 7f16e67..b4bf51d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -24,9 +24,9 @@ edition = "2021"
 repository = "https://github.com/mtshiba/pylyzer"
 
 [workspace.dependencies]
-erg_common = { version = "0.6.49-nightly.0", features = ["py_compat", "els"] }
-erg_compiler = { version = "0.6.49-nightly.0", features = ["py_compat", "els"] }
-els = { version = "0.1.61-nightly.0", features = ["py_compat"] }
+erg_common = { version = "0.6.49-nightly.1", features = ["py_compat", "els"] }
+erg_compiler = { version = "0.6.49-nightly.1", features = ["py_compat", "els"] }
+els = { version = "0.1.61-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 = "0.4.0", features = ["all-nodes-with-ranges", "location"] }
diff --git a/tests/foo/bar.py b/tests/foo/bar.py
index 5c1d692..84722c0 100644
--- a/tests/foo/bar.py
+++ b/tests/foo/bar.py
@@ -1,9 +1,11 @@
 i = 0
 
 class Bar:
+    CONST = "foo.bar"
     def f(self): return 1
 
 class Baz(Exception):
+    CONST = "foo.baz"
     pass
 
 class Qux(Baz):
diff --git a/tests/foo/baz/__init__.py b/tests/foo/baz/__init__.py
index f3f3aae..bdd1777 100644
--- a/tests/foo/baz/__init__.py
+++ b/tests/foo/baz/__init__.py
@@ -1 +1,4 @@
-i = 0
\ No newline at end of file
+i = 0
+
+class Bar:
+    CONST = "foo.baz.bar"
diff --git a/tests/import.py b/tests/import.py
index 222a25c..b044c5e 100644
--- a/tests/import.py
+++ b/tests/import.py
@@ -2,6 +2,7 @@
 import foo
 from . import foo
 from foo import bar, Bar
+from foo.bar import Baz
 from foo import baz
 import random
 from random import randint as rdi
@@ -30,6 +31,12 @@
 
 assert foo.i == 0
 assert Bar().f() == 1
+assert Bar.CONST == "foo.bar"
+assert Baz.CONST == "foo.baz"
+
+from foo.baz import Bar
+
+assert Bar.CONST == "foo.baz.bar"
 
 from glob import glob
 print(glob("*"))