diff --git a/README.md b/README.md
index 727b0d6..7546df1 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,7 @@ To test the UI without real data, just run:
 ```
 $ yesod devel
 ```
+(install the yesod executable from yesod-bin).
 
 ## Testing with postgresql
 Now, initially you need to run the cron job to create and populate the database:
@@ -29,7 +30,7 @@ $ export PGSTRING=postgresql://postgres:password@localhost:5432/stackage
 $ stack exec stackage-server-cron
 ```
 
-Note that you need to modify the PGSTRING environment variable according to your actual database configuration. Also, you need to create an empty database before running the cron job. Note that it takes quites some time for it to load your database.
+Note that you need to modify the PGSTRING environment variable according to your actual database configuration. Also, you need to create an empty database before running the cron job. Note that it takes quite some time for it to load your database.
 
 After this, run the stackage server:
 
diff --git a/app/stackage-server-cron.hs b/app/stackage-server-cron.hs
index aa4052f..aaebc0c 100644
--- a/app/stackage-server-cron.hs
+++ b/app/stackage-server-cron.hs
@@ -81,7 +81,7 @@ main = do
         execParser $
         info
             (optsParser <*
-             abortOption ShowHelpText (long "help" <> short 'h' <> help "Display this message."))
+             abortOption (ShowHelpText Nothing) (long "help" <> short 'h' <> help "Display this message."))
             (header "stackage-cron - Keep stackage.org up to date" <>
              progDesc
                  "Uses github.com/commercialhaskell/stackage-snapshots repository as a source \
diff --git a/package.yaml b/package.yaml
index 3d0c1bf..893802c 100644
--- a/package.yaml
+++ b/package.yaml
@@ -62,7 +62,7 @@ dependencies:
 - zlib
 - unordered-containers
 - hashable
-- Cabal
+- Cabal >= 3.2
 - mono-traversable
 - process
 - cmark-gfm
diff --git a/src/Stackage/Database/Cron.hs b/src/Stackage/Database/Cron.hs
index 7d41133..77ce0cf 100644
--- a/src/Stackage/Database/Cron.hs
+++ b/src/Stackage/Database/Cron.hs
@@ -25,8 +25,8 @@ import qualified Data.IntMap.Strict as IntMap
 import Data.Monoid (Any(..))
 import Data.Streaming.Network (bindPortTCP)
 import Data.Yaml (decodeFileEither)
-import Database.Persist
-import Database.Persist.Postgresql
+import Database.Persist hiding (exists)
+import Database.Persist.Postgresql hiding (exists)
 import qualified Hoogle
 import Network.AWS hiding (Request, Response)
 import Network.AWS.Data.Text (toText)
diff --git a/src/Stackage/Database/PackageInfo.hs b/src/Stackage/Database/PackageInfo.hs
index 47eac31..f47a563 100644
--- a/src/Stackage/Database/PackageInfo.hs
+++ b/src/Stackage/Database/PackageInfo.hs
@@ -38,6 +38,7 @@ import Distribution.Types.Library (exposedModules)
 import Distribution.Types.PackageDescription (PackageDescription(package))
 import Distribution.Types.VersionRange (VersionRange, intersectVersionRanges,
                                         normaliseVersionRange, withinRange)
+import Distribution.Utils.ShortText (fromShortText)
 import Distribution.Version (simplifyVersionRange)
 import RIO
 import qualified RIO.Map as Map
@@ -71,15 +72,15 @@ toPackageInfo ::
     -> PackageInfo
 toPackageInfo gpd mreadme mchangelog =
     PackageInfo
-        { piSynopsis = T.pack $ synopsis pd
-        , piDescription = renderHaddock (description pd)
+        { piSynopsis = T.pack $ fromShortText $ synopsis pd
+        , piDescription = renderHaddock $ fromShortText (description pd)
         , piReadme = maybe mempty (\(Readme bs isMarkdown) -> renderContent bs isMarkdown) mreadme
         , piChangelog =
               maybe mempty (\(Changelog bs isMarkdown) -> renderContent bs isMarkdown) mchangelog
-        , piAuthors = parseIdentitiesLiberally $ T.pack $ author pd
-        , piMaintainers = parseIdentitiesLiberally $ T.pack $ maintainer pd
+        , piAuthors = parseIdentitiesLiberally $ T.pack . fromShortText $ author pd
+        , piMaintainers = parseIdentitiesLiberally $ T.pack . fromShortText $ maintainer pd
         , piHomepage =
-              case T.strip $ T.pack $ homepage pd of
+              case T.strip . T.pack . fromShortText $ homepage pd of
                   "" -> Nothing
                   x  -> Just x
         , piLicenseName = T.pack $ prettyShow $ license pd
@@ -93,7 +94,7 @@ toPackageInfo gpd mreadme mchangelog =
                 else toHtml $ Textarea txt
 
 getSynopsis :: GenericPackageDescription -> Text
-getSynopsis = T.pack . synopsis . packageDescription
+getSynopsis = T.pack . fromShortText . synopsis . packageDescription
 
 extractModuleNames :: GenericPackageDescription -> [ModuleNameP]
 extractModuleNames = maybe [] (coerce . exposedModules . condTreeData) . condLibrary
diff --git a/src/Stackage/Database/Query.hs b/src/Stackage/Database/Query.hs
index df7d7e8..7f2b5e5 100644
--- a/src/Stackage/Database/Query.hs
+++ b/src/Stackage/Database/Query.hs
@@ -78,9 +78,10 @@ module Stackage.Database.Query
 
 import qualified Data.Aeson as A
 import qualified Data.List as L
-import Database.Esqueleto
-import Database.Esqueleto.Internal.Language (FromPreprocess)
-import Database.Esqueleto.Internal.Sql
+import Database.Esqueleto.Legacy
+import Database.Esqueleto.Internal.Internal (FromPreprocess, SqlSelect,
+                                             unsafeSqlCastAs,
+                                             unsafeSqlFunction)
 import Distribution.Types.PackageId (PackageIdentifier(PackageIdentifier))
 import Distribution.PackageDescription (packageDescription)
 import Distribution.Types.PackageDescription (PackageDescription(package))
@@ -604,7 +605,7 @@ getSnapshotPackageLatestVersionQuery ::
        PackageNameP -> ReaderT SqlBackend (RIO env) (Maybe SnapshotPackageInfo)
 getSnapshotPackageLatestVersionQuery pname =
     fmap snd . listToMaybe <$>
-    (snapshotPackageInfoQuery $ \_sp s pn v spiQ -> do
+    (snapshotPackageInfoQuery $ \_sp s pn _v spiQ -> do
          where_ (pn ^. PackageNameName ==. val pname)
          orderBy [desc (s ^. SnapshotId)]
          limit 1
diff --git a/src/Stackage/Snapshot/Diff.hs b/src/Stackage/Snapshot/Diff.hs
index 8256a78..641812c 100644
--- a/src/Stackage/Snapshot/Diff.hs
+++ b/src/Stackage/Snapshot/Diff.hs
@@ -75,14 +75,14 @@ snapshotDiff
   -> [(PackageNameP, VersionP)]
   -> SnapshotDiff
 snapshotDiff as0 bs0 =
-    SnapshotDiff $ map (second VersionChange) $ go (sortEm as0) (sortEm bs0)
+    SnapshotDiff $ map (second VersionChange) $ go (sortOn cmp as0) (sortOn cmp bs0)
   where
-    sortEm = sortOn (toCaseFold . textDisplay . fst)
+    cmp = toCaseFold . textDisplay . fst
 
     go as [] = map (second This) as
     go [] bs = map (second That) bs
     go (a:as) (b:bs) =
-      case compare (fst a) (fst b) of
+      case (compare `on` cmp) a b of
         EQ
           | snd a == snd b -> go as bs
           | otherwise -> (fst a, These (snd a) (snd b)) : go as bs
diff --git a/src/Types.hs b/src/Types.hs
index 4745ddb..2d4de53 100644
--- a/src/Types.hs
+++ b/src/Types.hs
@@ -55,7 +55,7 @@ import Data.Hashable (hashUsing, hashWithSalt)
 import qualified Data.Text as T
 import qualified Data.Text.Read as Reader
 import Data.Typeable
-import Database.Esqueleto.Internal.Language
+import Database.Esqueleto.Internal.Internal
 import Database.Persist
 import Database.Persist.Sql (PersistFieldSql(sqlType))
 import qualified Distribution.ModuleName as DT (components, fromComponents,
diff --git a/stack.yaml b/stack.yaml
index 5a36ff8..fd33610 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,19 +1,10 @@
-resolver: lts-16.31
+resolver: lts-18.28
 extra-deps:
-- barrier-0.1.1@sha256:2021f84c3aba67bb635d72825d3bc0371942444dc014bc307b875071e29eea98,3931
-- hackage-security-0.6.0.1
-- hoogle-5.0.18
-- yesod-gitrepo-0.3.0@sha256:7aad996935065726ce615c395d735cc01dcef3993b1788f670f6bfc866085e02,1191
-- github: commercialhaskell/pantry
-  commit: c4e7c3dff9770e7937c93edfb6564dd6a1acd55e
-- github: fpco/casa
-  commit: fc0ed26858bfc4f2966ed2dfb2871bae9266dda6
-  subdirs:
-     - casa-client
-     - casa-types
-- github: yesodweb/persistent
-  commit: f66ed6f472ff3faa140db37bf4649e5b80be4c57
-  subdirs: [persistent]
+- amazonka-1.6.1
+- barrier-0.1.1
+- classy-prelude-yesod-1.5.0
+- unliftio-core-0.1.2.0
+- yesod-gitrepo-0.3.0
 
 drop-packages:
 - Cabal