1 files changed, 1 insertions, 0 deletions

diff --git a/build.zig b/build.zig
index 5e4b696..6b5f2cb 100644
--- a/build.zig
+++ b/build.zig
@@ -22,6 +22,7 @@ const common_c_files = &[_][]const u8 {
     "src/puzzles/puzzle.c",
     "src/puzzles/parser.c",
     "src/puzzles/distractions.c",
+    "src/puzzles/collection.c",
 };
 
 pub fn build(b: *std.Build) void {