diff --git a/build-constraints.yaml b/build-constraints.yaml
index 4076bbfa..68893d04 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -851,6 +851,9 @@ packages:
 
     "Aleksey Kliger aleksey@lambdageek.org @lambdageek":
         - unbound-generics
+        - indentation-core
+        - indentation-parsec
+        - indentation-trifecta
 
     "Alois Cochard alois.cochard@gmail.com @aloiscochard":
         # GHC 8 - codex