diff --git a/build-constraints.yaml b/build-constraints.yaml
index 02792a11..aec32ef6 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2025,6 +2025,7 @@ packages:
 
     "Takayuki Muranushi <muranushi@gmail.com> @nushio3":
         - binary-search
+        - unicode-show
 
     "Jason Shipman <jasonpshipman@gmail.com> @jship":
         # on behalf of Boris Sukholitko @bosu