diff --git a/build-constraints.yaml b/build-constraints.yaml
index 8eaeaa0b..cf404a6a 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3843,6 +3843,9 @@ packages:
     "Jan Path <jan@jpath.de> @janpath":
         - smallcheck-series
 
+    "Taisuke Hikawa <23.prime.37@gmail.com> @23prime":
+        - oeis2
+
     "Grandfathered dependencies":
         - Boolean
         - ChasingBottoms