diff --git a/.dockerignore b/.dockerignore
index 8a3c7ad..ae173de 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -13,6 +13,10 @@ spec/
 # Compiled elm files
 elo_tracker/static/elo_tracker.js
 
+# Data files
+games.jsonl
+known_players.json
+
 # ---> Elm
 # elm-package generated files
 elm-stuff
diff --git a/.gitignore b/.gitignore
index df967e0..4cf0fc7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,6 +5,10 @@
 # Compiled elm files
 elo_tracker/static/elo_tracker.js
 
+# Data files
+games.jsonl
+known_players.json
+
 # ---> Elm
 # elm-package generated files
 elm-stuff