diff --git a/data_analysis/requirements.txt b/data_analysis/requirements.txt
index 46c45a2..7763e6a 100644
--- a/data_analysis/requirements.txt
+++ b/data_analysis/requirements.txt
@@ -9,3 +9,4 @@ plotly==5.11.0
 chart-studio==1.1.0
 statsmodels==0.13.5
 weightedstats==0.4.1
+pytest==8.2.0