diff --git a/.idea/runConfigurations/statapp.xml b/.idea/runConfigurations/statapp.xml
index 3a0f2a0..c96e8cd 100644
--- a/.idea/runConfigurations/statapp.xml
+++ b/.idea/runConfigurations/statapp.xml
@@ -7,7 +7,7 @@
       <env name="PYTHONUNBUFFERED" value="1" />
     </envs>
     <option name="SDK_HOME" value="" />
-    <option name="SDK_NAME" value="Poetry (stat)" />
+    <option name="SDK_NAME" value="Poetry (statapp)" />
     <option name="WORKING_DIRECTORY" value="" />
     <option name="IS_MODULE_SDK" value="false" />
     <option name="ADD_CONTENT_ROOTS" value="true" />
@@ -21,4 +21,4 @@
     <option name="INPUT_FILE" value="" />
     <method v="2" />
   </configuration>
-</component>
\ No newline at end of file
+</component>
diff --git a/poetry.lock b/poetry.lock
index c087423..403baaa 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -160,36 +160,36 @@ files = [
 
 [[package]]
 name = "pandas"
-version = "2.0.0"
+version = "2.0.3"
 description = "Powerful data structures for data analysis, time series, and statistics"
 optional = false
 python-versions = ">=3.8"
 files = [
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+    {file = "pandas-2.0.3.tar.gz", hash = "sha256:c02f372a88e0d17f36d3093a644c73cfc1788e876a7c4bcb4020a77512e2043c"},
 ]
 
 [package.dependencies]
@@ -199,7 +199,7 @@ pytz = ">=2020.1"
 tzdata = ">=2022.1"
 
 [package.extras]
-all = ["PyQt5 (>=5.15.1)", "SQLAlchemy (>=1.4.16)", "beautifulsoup4 (>=4.9.3)", "bottleneck (>=1.3.2)", "brotlipy (>=0.7.0)", "fastparquet (>=0.6.3)", "fsspec (>=2021.07.0)", "gcsfs (>=2021.07.0)", "html5lib (>=1.1)", "hypothesis (>=6.34.2)", "jinja2 (>=3.0.0)", "lxml (>=4.6.3)", "matplotlib (>=3.6.1)", "numba (>=0.53.1)", "numexpr (>=2.7.3)", "odfpy (>=1.4.1)", "openpyxl (>=3.0.7)", "pandas-gbq (>=0.15.0)", "psycopg2 (>=2.8.6)", "pyarrow (>=7.0.0)", "pymysql (>=1.0.2)", "pyreadstat (>=1.1.2)", "pytest (>=7.0.0)", "pytest-asyncio (>=0.17.0)", "pytest-xdist (>=2.2.0)", "python-snappy (>=0.6.0)", "pyxlsb (>=1.0.8)", "qtpy (>=2.2.0)", "s3fs (>=2021.08.0)", "scipy (>=1.7.1)", "tables (>=3.6.1)", "tabulate (>=0.8.9)", "xarray (>=0.21.0)", "xlrd (>=2.0.1)", "xlsxwriter (>=1.4.3)", "zstandard (>=0.15.2)"]
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 aws = ["s3fs (>=2021.08.0)"]
 clipboard = ["PyQt5 (>=5.15.1)", "qtpy (>=2.2.0)"]
 compression = ["brotlipy (>=0.7.0)", "python-snappy (>=0.6.0)", "zstandard (>=0.15.2)"]
@@ -218,7 +218,7 @@ plot = ["matplotlib (>=3.6.1)"]
 postgresql = ["SQLAlchemy (>=1.4.16)", "psycopg2 (>=2.8.6)"]
 spss = ["pyreadstat (>=1.1.2)"]
 sql-other = ["SQLAlchemy (>=1.4.16)"]
-test = ["hypothesis (>=6.34.2)", "pytest (>=7.0.0)", "pytest-asyncio (>=0.17.0)", "pytest-xdist (>=2.2.0)"]
+test = ["hypothesis (>=6.34.2)", "pytest (>=7.3.2)", "pytest-asyncio (>=0.17.0)", "pytest-xdist (>=2.2.0)"]
 xml = ["lxml (>=4.6.3)"]
 
 [[package]]
@@ -311,61 +311,22 @@ files = [
 ]
 
 [[package]]
-name = "pyside6"
-version = "6.5.2"
+name = "pyside2"
+version = "5.15.2.1"
 description = "Python bindings for the Qt cross-platform application and UI framework"
 optional = false
-python-versions = "<3.12,>=3.7"
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <3.11"
 files = [
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-PySide6-Essentials = "6.5.2"
-shiboken6 = "6.5.2"
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-[[package]]
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-shiboken6 = "6.5.2"
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-[[package]]
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-version = "6.5.2"
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-    {file = "PySide6_Essentials-6.5.2-cp37-abi3-macosx_10_9_universal2.whl", hash = "sha256:c9606de7afaee57f2c0861cc4b973bd630556dd38ec0d1542560cba81c27ab81"},
-    {file = "PySide6_Essentials-6.5.2-cp37-abi3-manylinux_2_28_x86_64.whl", hash = "sha256:1620e82b38714a1570b142c01694d0415a25526517b24620ff9b00c9f76cfca9"},
-    {file = "PySide6_Essentials-6.5.2-cp37-abi3-win_amd64.whl", hash = "sha256:e67b10f96f0ac5ed24d7e3c4985d37c70550a9dee6f38b127faf5e5341151665"},
-    {file = "PySide6_Essentials-6.5.2-pp39-pypy39_pp73-macosx_10_9_universal2.whl", hash = "sha256:149f1db77d82f35c6a88a403f5297645ebe737df28e163ac4dc402dfa0b961ee"},
-    {file = "PySide6_Essentials-6.5.2-pp39-pypy39_pp73-manylinux_2_28_x86_64.whl", hash = "sha256:4be6ed964cb863823f2788717b9a6ba8f1d94eb3fa2bf1584f4621ab5e021e27"},
-    {file = "PySide6_Essentials-6.5.2-pp39-pypy39_pp73-win_amd64.whl", hash = "sha256:6b21cf78b33554f793d409d79b828d9578d34200c86f813ef1b8dac756589b71"},
-]
-
-[package.dependencies]
-shiboken6 = "6.5.2"
+shiboken2 = "5.15.2.1"
 
 [[package]]
 name = "python-dateutil"
@@ -479,18 +440,18 @@ testing = ["build[virtualenv]", "filelock (>=3.4.0)", "flake8-2020", "ini2toml[l
 testing-integration = ["build[virtualenv] (>=1.0.3)", "filelock (>=3.4.0)", "jaraco.envs (>=2.2)", "jaraco.path (>=3.2.0)", "packaging (>=23.1)", "pytest", "pytest-enabler", "pytest-xdist", "tomli", "virtualenv (>=13.0.0)", "wheel"]
 
 [[package]]
-name = "shiboken6"
-version = "6.5.2"
-description = "Python/C++ bindings helper module"
+name = "shiboken2"
+version = "5.15.2.1"
+description = "Python / C++ bindings helper module"
 optional = false
-python-versions = "<3.12,>=3.7"
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <3.11"
 files = [
-    {file = "shiboken6-6.5.2-cp37-abi3-macosx_10_9_universal2.whl", hash = "sha256:ba7af130d34ea03e329baebd80982d2635aee7e58dbb07a07085509a501ed03f"},
-    {file = "shiboken6-6.5.2-cp37-abi3-manylinux_2_28_x86_64.whl", hash = "sha256:3fbc35ff3c19e7d39433671bfc1be3d7fa9d071bfdd0ffe1c2a4d27acd6cf6a5"},
-    {file = "shiboken6-6.5.2-cp37-abi3-win_amd64.whl", hash = "sha256:558bdb3b0ccc8aac5f9029eabfd6ad8d41f93a87cd7f54395e07732fce39280d"},
-    {file = "shiboken6-6.5.2-pp39-pypy39_pp73-macosx_10_9_universal2.whl", hash = "sha256:4e073b40734a7f9cc6ac289c735362967bb45c34f591f7c0fab7cef1d62e6a66"},
-    {file = "shiboken6-6.5.2-pp39-pypy39_pp73-manylinux_2_28_x86_64.whl", hash = "sha256:cc89759aabafce49b629b189ed7c81986fedaac695714a4eed1aaeb16783c6a9"},
-    {file = "shiboken6-6.5.2-pp39-pypy39_pp73-win_amd64.whl", hash = "sha256:e60d8dd3292e3f87662b9e37ae5c558c519f8250da627c473b68bd8d24ed3243"},
+    {file = "shiboken2-5.15.2.1-5.15.2-cp27-cp27m-macosx_10_13_intel.whl", hash = "sha256:f890f5611ab8f48b88cfecb716da2ac55aef99e2923198cefcf781842888ea65"},
+    {file = "shiboken2-5.15.2.1-5.15.2-cp27-cp27mu-manylinux1_x86_64.whl", hash = "sha256:87079c07587859a525b9800d60b1be971338ce9b371d6ead81f15ee5a46d448b"},
+    {file = "shiboken2-5.15.2.1-5.15.2-cp35.cp36.cp37.cp38.cp39.cp310-abi3-macosx_10_13_intel.whl", hash = "sha256:ffd3d0ec3d508e592d7ee3885d27fee1f279a49989f734eb130f46d9501273a9"},
+    {file = "shiboken2-5.15.2.1-5.15.2-cp35.cp36.cp37.cp38.cp39.cp310-abi3-manylinux1_x86_64.whl", hash = "sha256:63debfcc531b6a2b4985aa9b71433d2ad3bac542acffc729cc0ecaa3854390c0"},
+    {file = "shiboken2-5.15.2.1-5.15.2-cp35.cp36.cp37.cp38.cp39.cp310-none-win32.whl", hash = "sha256:eb0da44b6fa60c6bd317b8f219e500595e94e0322b33ec5b4e9f406bedaee555"},
+    {file = "shiboken2-5.15.2.1-5.15.2-cp35.cp36.cp37.cp38.cp39.cp310-none-win_amd64.whl", hash = "sha256:a0d0fdeb12b72c8af349b9642ccc67afd783dca449309f45e78cda50272fd6b7"},
 ]
 
 [[package]]
@@ -553,4 +514,4 @@ testing = ["big-O", "jaraco.functools", "jaraco.itertools", "more-itertools", "p
 [metadata]
 lock-version = "2.0"
 python-versions = ">=3.8,<3.9"
-content-hash = "d2e97bba5f3c1c87c49a4ec8b8a491a3c967327815b440a015456c7a98fadc04"
+content-hash = "2ee72912250a8c96f04624c665fd1f86b222ac6561ae4f20bedb77160a8d4756"
diff --git a/pyproject.toml b/pyproject.toml
index 82cb921..1eecfc5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,10 +10,10 @@ readme = "README.md"
 [tool.poetry.dependencies]
 # windows 7 support
 python = ">=3.8,<3.9"
-pyside6 = "^6.4.0"
 pre-commit = "^3.4.0"
 pyinstaller = "^6.0.0"
 pandas = "^2.0"
+pyside2 = "^5.15.2.1"
 
 
 [build-system]
diff --git a/statapp/__main__.py b/statapp/__main__.py
index 43fe259..3005bdb 100644
--- a/statapp/__main__.py
+++ b/statapp/__main__.py
@@ -1,5 +1,5 @@
 import sys
-from PySide6.QtWidgets import QApplication
+from PySide2.QtWidgets import QApplication
 
 from statapp.main_window import MainWindow
 
@@ -8,7 +8,7 @@ def main():
     app = QApplication(sys.argv)
     window = MainWindow()
     window.show()
-    return app.exec()
+    return app.exec_()
 
 
 if __name__ == "__main__":
diff --git a/statapp/about_window.py b/statapp/about_window.py
index fabca21..8795fbc 100644
--- a/statapp/about_window.py
+++ b/statapp/about_window.py
@@ -1,5 +1,5 @@
-from PySide6.QtGui import QMovie
-from PySide6.QtWidgets import QMainWindow
+from PySide2.QtGui import QMovie
+from PySide2.QtWidgets import QMainWindow
 
 from statapp.ui.ui_about_window import Ui_AboutWindow
 from statapp.utils import resource_path
diff --git a/statapp/main_window.py b/statapp/main_window.py
index 4cd53d1..56b684b 100644
--- a/statapp/main_window.py
+++ b/statapp/main_window.py
@@ -1,5 +1,5 @@
-from PySide6.QtCore import Slot
-from PySide6.QtWidgets import QMainWindow
+from PySide2.QtCore import Slot
+from PySide2.QtWidgets import QMainWindow
 
 from statapp.about_window import AboutWindow
 from statapp.ui.ui_main_window import Ui_MainWindow
diff --git a/statapp/ui/ui_about_window.py b/statapp/ui/ui_about_window.py
index 9c7c5e5..725f828 100644
--- a/statapp/ui/ui_about_window.py
+++ b/statapp/ui/ui_about_window.py
@@ -3,20 +3,15 @@
 ################################################################################
 ## Form generated from reading UI file 'about_window.ui'
 ##
-## Created by: Qt User Interface Compiler version 6.5.2
+## Created by: Qt User Interface Compiler version 5.15.2
 ##
 ## WARNING! All changes made in this file will be lost when recompiling UI file!
 ################################################################################
 
-from PySide6.QtCore import (QCoreApplication, QDate, QDateTime, QLocale,
-    QMetaObject, QObject, QPoint, QRect,
-    QSize, QTime, QUrl, Qt)
-from PySide6.QtGui import (QBrush, QColor, QConicalGradient, QCursor,
-    QFont, QFontDatabase, QGradient, QIcon,
-    QImage, QKeySequence, QLinearGradient, QPainter,
-    QPalette, QPixmap, QRadialGradient, QTransform)
-from PySide6.QtWidgets import (QApplication, QFrame, QGridLayout, QLabel,
-    QMainWindow, QSizePolicy, QWidget)
+from PySide2.QtCore import *
+from PySide2.QtGui import *
+from PySide2.QtWidgets import *
+
 
 class Ui_AboutWindow(object):
     def setupUi(self, AboutWindow):
@@ -87,4 +82,3 @@ class Ui_AboutWindow(object):
         self.labelbasegigamen.setText(QCoreApplication.translate("AboutWindow", u"\u0422\u0435\u043e\u0440\u0435\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0444\u0443\u043d\u0434\u0430\u043c\u0435\u043d\u0442: \u0414\u043c\u0438\u0442\u0440\u044e\u043a \u0422. \u0413.", None))
         self.labelgif.setText("")
     # retranslateUi
-
diff --git a/statapp/ui/ui_main_window.py b/statapp/ui/ui_main_window.py
index 15b890f..866c384 100644
--- a/statapp/ui/ui_main_window.py
+++ b/statapp/ui/ui_main_window.py
@@ -3,22 +3,15 @@
 ################################################################################
 ## Form generated from reading UI file 'main_window.ui'
 ##
-## Created by: Qt User Interface Compiler version 6.5.2
+## Created by: Qt User Interface Compiler version 5.15.2
 ##
 ## WARNING! All changes made in this file will be lost when recompiling UI file!
 ################################################################################
 
-from PySide6.QtCore import (QCoreApplication, QDate, QDateTime, QLocale,
-    QMetaObject, QObject, QPoint, QRect,
-    QSize, QTime, QUrl, Qt)
-from PySide6.QtGui import (QAction, QBrush, QColor, QConicalGradient,
-    QCursor, QFont, QFontDatabase, QGradient,
-    QIcon, QImage, QKeySequence, QLinearGradient,
-    QPainter, QPalette, QPixmap, QRadialGradient,
-    QTransform)
-from PySide6.QtWidgets import (QApplication, QGridLayout, QHeaderView, QLabel,
-    QMainWindow, QMenu, QMenuBar, QSizePolicy,
-    QStatusBar, QTableView, QWidget)
+from PySide2.QtCore import *
+from PySide2.QtGui import *
+from PySide2.QtWidgets import *
+
 
 class Ui_MainWindow(object):
     def setupUi(self, MainWindow):
@@ -83,4 +76,3 @@ class Ui_MainWindow(object):
         self.modelmenu.setTitle(QCoreApplication.translate("MainWindow", u"\u041c\u043e\u0434\u0435\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435", None))
         self.helpmenu.setTitle(QCoreApplication.translate("MainWindow", u"\u0421\u043f\u0440\u0430\u0432\u043a\u0430", None))
     # retranslateUi
-