diff --git a/stack-8.0.2.yaml b/stack-8.0.2.yaml
index 51c6004..ca6ad6a 100644
--- a/stack-8.0.2.yaml
+++ b/stack-8.0.2.yaml
@@ -6,6 +6,7 @@ extra-deps:
   - butcher-1.3.0.0
   - data-tree-print-0.1.0.0
   - deque-0.2
+  - ghc-exactprint-0.5.6.0
 
 packages:
   - .