diff --git a/requirements.txt b/requirements.txt
index 3e2f205..c7b2d65 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,12 @@
+# Code quality
+black==23.7.0
+flake8==6.0.0
+mypy==1.4.1
+pydocstyle==6.3.0
+mypy-extensions==1.0.0
+types-openpyxl==3.1.0.15
+isort==5.12.0
+
 numpy
 pandas
 tabulate