diff --git a/internal/2017/register.go b/internal/2017/register.go
index 736a519..6b6f027 100644
--- a/internal/2017/register.go
+++ b/internal/2017/register.go
@@ -1,6 +1,7 @@
 package year2017
 
 import (
+	_ "advent-of-code/internal/2017/DayFour"
 	_ "advent-of-code/internal/2017/DayOne"
 	_ "advent-of-code/internal/2017/DayThree"
 	_ "advent-of-code/internal/2017/DayTwo"