diff --git a/README.md b/README.md
index 781a106..f96915f 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,9 @@
-# aoc2021
+# Advent of Code 2021
 
-A description of this package.
+See: [https://adventofcode.com/2021](https://adventofcode.com/2021)
+
+Solved in Swift 5.5.
+
+## Notes
+
+Xcode seems to have issues building this and doesn't like package resources. Build and run using `swift build && swift run`.