diff --git a/stack.yaml b/stack.yaml
index 9ac39bb51..bd8edf86e 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -4,7 +4,7 @@ nix:
   pure: false
   packages: [perl gmp ncurses zlib]
 
-resolver: lts-16.12
+resolver: lts-16.24
 
 packages:
 - hledger-lib