diff --git a/day13/sol.py b/day13/sol.py
index 238548a..bd3bbbe 100644
--- a/day13/sol.py
+++ b/day13/sol.py
@@ -1,7 +1,8 @@
+import json
 
 data = []
 for chunk in open("input").read().split("\n\n"):
-    data.append([eval(x) for x in chunk.splitlines(False)])
+    data.append([json.loads(x) for x in chunk.splitlines(False)])
 
 def less(a, b):
     if type(a) == int and type(b) == int: