diff --git a/build-constraints.yaml b/build-constraints.yaml
index 095a0b44..5167e8db 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4292,8 +4292,10 @@ packages:
         - morpheus-graphql-client
 
     "Satoshi Egi <egi@egison.org> @egisatoshi":
+        - backtracking
         - egison
         - mini-egison
+        - sweet-egison
         - egison-pattern-src
         - egison-pattern-src-th-mode