diff --git a/build-constraints.yaml b/build-constraints.yaml
index 7368f5c1..c6be6c92 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1575,7 +1575,7 @@ packages:
         - IntervalMap
 
     "Michele Lacchia <michelelacchia@gmail.com>":
-        # - argon >= 0.3
+        - argon >= 0.3
         - docopt
         - pathwalk