diff --git a/shard.yml b/shard.yml
index 284b30f..5f0f7ff 100644
--- a/shard.yml
+++ b/shard.yml
@@ -7,6 +7,10 @@ version: 0.1.0
 # description: |
 #   Short description of tap-aggregator
 
+targets:
+  tap-aggregator:
+    main: src/main.cr
+
 dependencies:
   tap:
     git: https://git.baguette.netlib.re/Baguette/tap-parser