diff --git a/.gitignore b/.gitignore
index 63547c2..f4921bb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,9 @@
 # Data files
 *.csv
 
+# Picture files
+*.png
+
 # Byte-compiled / optimized / DLL files
 __pycache__/
 *.py[cod]