diff --git a/stack-8.10.2.yaml b/stack-8.10.2.yaml
index c052b7fa0b..488efff7e5 100644
--- a/stack-8.10.2.yaml
+++ b/stack-8.10.2.yaml
@@ -26,6 +26,7 @@ extra-deps:
 - implicit-hie-cradle-0.2.0.1
 - implicit-hie-0.1.1.0
 - hie-bios-0.7.1
+- data-tree-print-0.1.0.2
 
 flags:
   haskell-language-server: