diff --git a/atpbar/funcs.py b/atpbar/funcs.py
index 371b80c..274562f 100644
--- a/atpbar/funcs.py
+++ b/atpbar/funcs.py
@@ -4,7 +4,7 @@
 from collections.abc import Iterator
 
 from .machine import StateMachine
-from .progressreport import ProgressReporter
+from .progress_report import ProgressReporter
 
 _machine = StateMachine()
 
diff --git a/atpbar/machine.py b/atpbar/machine.py
index 93d2d5f..767d863 100644
--- a/atpbar/machine.py
+++ b/atpbar/machine.py
@@ -3,7 +3,7 @@
 from threading import Lock, current_thread, main_thread
 
 from .presentation import create_presentation
-from .progressreport import ProgressReporter, ProgressReportPickup, Report
+from .progress_report import ProgressReporter, ProgressReportPickup, Report
 from .stream import StreamQueue, StreamRedirection, register_stream_queue
 
 
diff --git a/atpbar/main.py b/atpbar/main.py
index e6dc2a1..c2399c0 100644
--- a/atpbar/main.py
+++ b/atpbar/main.py
@@ -5,7 +5,7 @@
 from typing import Generic, Optional, TypeVar
 
 from .funcs import fetch_reporter
-from .progressreport import Report
+from .progress_report import Report
 
 T = TypeVar('T')
 
diff --git a/atpbar/presentation/base.py b/atpbar/presentation/base.py
index cdd348a..d8cf3f6 100755
--- a/atpbar/presentation/base.py
+++ b/atpbar/presentation/base.py
@@ -5,7 +5,7 @@
 from typing import TextIO
 from uuid import UUID
 
-from atpbar.progressreport import Report
+from atpbar.progress_report import Report
 
 
 class Presentation(ABC):
diff --git a/atpbar/progressreport/__init__.py b/atpbar/progress_report/__init__.py
similarity index 100%
rename from atpbar/progressreport/__init__.py
rename to atpbar/progress_report/__init__.py
diff --git a/atpbar/progressreport/complement.py b/atpbar/progress_report/complement.py
similarity index 100%
rename from atpbar/progressreport/complement.py
rename to atpbar/progress_report/complement.py
diff --git a/atpbar/progressreport/pickup.py b/atpbar/progress_report/pickup.py
similarity index 100%
rename from atpbar/progressreport/pickup.py
rename to atpbar/progress_report/pickup.py
diff --git a/atpbar/progressreport/report.py b/atpbar/progress_report/report.py
similarity index 100%
rename from atpbar/progressreport/report.py
rename to atpbar/progress_report/report.py
diff --git a/atpbar/progressreport/reporter.py b/atpbar/progress_report/reporter.py
similarity index 100%
rename from atpbar/progressreport/reporter.py
rename to atpbar/progress_report/reporter.py
diff --git a/tests/progressreport/__init__.py b/tests/progress_report/__init__.py
similarity index 100%
rename from tests/progressreport/__init__.py
rename to tests/progress_report/__init__.py
diff --git a/tests/progressreport/test_pickup.py b/tests/progress_report/test_pickup.py
similarity index 97%
rename from tests/progressreport/test_pickup.py
rename to tests/progress_report/test_pickup.py
index 382f9b5..4f9f346 100644
--- a/tests/progressreport/test_pickup.py
+++ b/tests/progress_report/test_pickup.py
@@ -4,7 +4,7 @@
 
 import pytest
 
-from atpbar.progressreport.pickup import ProgressReportPickup
+from atpbar.progress_report.pickup import ProgressReportPickup
 
 
 class TestStart:
@@ -130,7 +130,7 @@ def mock_short_sleep(self, pickup, monkeypatch):
     def mock_time(self, monkeypatch):
         ret = mock.Mock()
         ret.time.return_value = 1000.0
-        from atpbar.progressreport import pickup as m
+        from atpbar.progress_report import pickup as m
 
         monkeypatch.setattr(m, "time", ret)
         return ret
diff --git a/tests/progressreport/test_report_complement.py b/tests/progress_report/test_report_complement.py
similarity index 98%
rename from tests/progressreport/test_report_complement.py
rename to tests/progress_report/test_report_complement.py
index 68f1876..7eb2714 100644
--- a/tests/progressreport/test_report_complement.py
+++ b/tests/progress_report/test_report_complement.py
@@ -1,6 +1,6 @@
 import pytest
 
-from atpbar.progressreport.complement import ProgressReportComplementer
+from atpbar.progress_report.complement import ProgressReportComplementer
 
 
 @pytest.fixture()
diff --git a/tests/progressreport/test_reporter.py b/tests/progress_report/test_reporter.py
similarity index 94%
rename from tests/progressreport/test_reporter.py
rename to tests/progress_report/test_reporter.py
index a9e61c6..dcb710a 100644
--- a/tests/progressreport/test_reporter.py
+++ b/tests/progress_report/test_reporter.py
@@ -4,7 +4,7 @@
 
 import unittest.mock as mock
 
-from atpbar.progressreport.reporter import ProgressReporter
+from atpbar.progress_report.reporter import ProgressReporter
 
 
 @pytest.fixture()
@@ -15,7 +15,7 @@ def mock_queue():
 @pytest.fixture()
 def mock_time(monkeypatch):
     ret = mock.Mock()
-    module = sys.modules["atpbar.progressreport.reporter"]
+    module = sys.modules["atpbar.progress_report.reporter"]
     monkeypatch.setattr(module, "time", ret)
     return ret
 
diff --git a/tests/scenarios/conftest.py b/tests/scenarios/conftest.py
index 883cac7..f7a3b67 100644
--- a/tests/scenarios/conftest.py
+++ b/tests/scenarios/conftest.py
@@ -84,6 +84,6 @@ def machine(monkeypatch):
 
 @pytest.fixture(autouse=True)
 def reporter_interval(monkeypatch):
-    module = sys.modules["atpbar.progressreport.reporter"]
+    module = sys.modules["atpbar.progress_report.reporter"]
     monkeypatch.setattr(module, "DEFAULT_INTERVAL", 0)
     yield