diff --git a/stack8.10.yaml b/stack8.10.yaml
index 3149c3354..1d3b292ba 100644
--- a/stack8.10.yaml
+++ b/stack8.10.yaml
@@ -4,7 +4,7 @@ nix:
   pure: false
   packages: [perl gmp ncurses zlib]
 
-resolver: nightly-2020-11-11
+resolver: nightly-2021-01-10
 
 packages:
 - hledger-lib
@@ -12,7 +12,7 @@ packages:
 - hledger-ui
 - hledger-web
 
-extra-deps:
-- pretty-simple-4.0.0.0
-- prettyprinter-1.7.0
-- prettyprinter-ansi-terminal-1.1.2
+# extra-deps:
+# - pretty-simple-4.0.0.0
+# - prettyprinter-1.7.0
+# - prettyprinter-ansi-terminal-1.1.2