diff --git a/stack88.yaml b/stack88.yaml
index c4c61fbd..53900411 100644
--- a/stack88.yaml
+++ b/stack88.yaml
@@ -1,10 +1,8 @@
-resolver: nightly-2020-01-03
+resolver: nightly-2020-01-21
 packages:
 - .
 extra-deps:
-- hie-bios-0.3.2
 - fuzzy-0.1.0.0
-- haddock-library-1.8.0
 allow-newer: true
 nix:
   packages: [zlib]