--- stack-2.1.3.1/src/Stack/Setup.hs~	2019-07-14 12:22:56.000000000 +0800
+++ stack-2.1.3.1/src/Stack/Setup.hs	2020-04-12 11:56:39.453839733 +0800
@@ -482,9 +482,9 @@
         logWarn "For more information, see: https://github.com/commercialhaskell/stack/issues/648"
         logWarn ""
         pure True
-    | ghcVersion >= mkVersion [8, 7] -> do
+    | ghcVersion >= mkVersion [8, 9] -> do
         logWarn $
-          "Stack has not been tested with GHC versions above 8.6, and using " <>
+          "Stack has not been tested with GHC versions above 8.8, and using " <>
           fromString (versionString ghcVersion) <>
           ", this may fail"
         pure True
@@ -509,9 +509,9 @@
         logWarn "This invocation will most likely fail."
         logWarn "To fix this, either use an older version of Stack or a newer resolver"
         logWarn "Acceptable resolvers: lts-3.0/nightly-2015-05-05 or later"
-    | cabalVersion >= mkVersion [2, 5] ->
+    | cabalVersion >= mkVersion [3, 1] ->
         logWarn $
-          "Stack has not been tested with Cabal versions above 2.4, but version " <>
+          "Stack has not been tested with Cabal versions above 3.0, but version " <>
           fromString (versionString cabalVersion) <>
           " was found, this may fail"
     | otherwise -> pure ()

Diff finished.  Sun Apr 12 11:56:54 2020