diff --git a/.gitignore b/.gitignore
index 31f9738..63547c2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,6 @@
+# Data files
+*.csv
+
 # Byte-compiled / optimized / DLL files
 __pycache__/
 *.py[cod]