diff --git a/stack-ghc8.2.yaml b/stack-ghc8.2.yaml
index 59508526a..380d7e4b7 100644
--- a/stack-ghc8.2.yaml
+++ b/stack-ghc8.2.yaml
@@ -1,6 +1,6 @@
 # stack build plan using GHC 8.2.2
 
-resolver: lts-11.11
+resolver: lts-11.22
 
 packages:
 - hledger-lib
diff --git a/stack-ghc8.4.yaml b/stack-ghc8.4.yaml
index b45b6e78d..101a897fc 100644
--- a/stack-ghc8.4.yaml
+++ b/stack-ghc8.4.yaml
@@ -1,6 +1,6 @@
 # stack build plan using GHC 8.4.3
 
-resolver: lts-12.14
+resolver: lts-12.26
 
 packages:
 - hledger-lib