etc/settings

--- a/etc/settings	Sat Oct 02 19:28:47 2021 +0200
+++ b/etc/settings	Sat Oct 02 20:00:02 2021 +0200
@@ -154,9 +154,9 @@
 
 ISABELLE_STACK_ROOT="$USER_HOME/.stack"
 
-ISABELLE_STACK_RESOLVER="lts-17.10"
+ISABELLE_STACK_RESOLVER="lts-18.12"
 
-ISABELLE_GHC_VERSION="ghc-8.10.4"
+ISABELLE_GHC_VERSION="ghc-8.10.7"
 
 
 ###