diff --git a/Database/Groundhog/MySQL.hs b/Database/Groundhog/MySQL.hs
--- a/Database/Groundhog/MySQL.hs
+++ b/Database/Groundhog/MySQL.hs
@@ -47,9 +47,13 @@
 import Data.IORef (newIORef, readIORef, writeIORef)
 import Data.List (groupBy, intercalate, intersect, isInfixOf, partition, stripPrefix)
 import Data.Maybe (fromJust, fromMaybe, isJust)
-import Data.Monoid
+import Data.Monoid hiding ((<>))
 import Data.Pool
 
+-- work around for no Semigroup instance of MySQL.Query prior to
+-- mysql-simple 0.4.5
+import qualified Data.ByteString as B
+
 newtype MySQL = MySQL MySQL.Connection
 
 instance DbDescriptor MySQL where
@@ -137,12 +141,21 @@
               -> m a
 withMySQLConn s = bracket (liftIO $ open' s) (liftIO . close')
 
+-- As with the postgresql backend, it's not obvious to me how best to
+-- handle the Semigroup/Monoid changes. So this manually copies over
+-- the changes added in
+-- https://github.com/paul-rouse/mysql-simple/commit/c42e1d8dd915cf2312464db0fe7b577074435d6d#diff-20308cd48ab326c8ac85f54bdb65f0ebR73
+--
+combine :: MySQL.Query -> MySQL.Query -> MySQL.Query
+-- combine = (<>)
+combine (MySQL.Query a) (MySQL.Query b) = MySQL.Query (B.append a b)
+  
 instance Savepoint MySQL where
   withConnSavepoint name m (MySQL c) = do
     let name' = fromString name
-    liftIO $ MySQL.execute_ c $ "SAVEPOINT " <> name'
-    x <- onException m (liftIO $ MySQL.execute_ c $ "ROLLBACK TO SAVEPOINT " <> name')
-    liftIO $ MySQL.execute_ c $ "RELEASE SAVEPOINT" <> name'
+    liftIO $ MySQL.execute_ c $ "SAVEPOINT " `combine` name'
+    x <- onException m (liftIO $ MySQL.execute_ c $ "ROLLBACK TO SAVEPOINT " `combine` name')
+    liftIO $ MySQL.execute_ c $ "RELEASE SAVEPOINT" `combine` name'
     return x
 
 instance ConnectionManager MySQL where
diff --git a/changelog b/changelog
--- a/changelog
+++ b/changelog
@@ -1,3 +1,6 @@
+0.9.0
+* Support for GHC 8.4
+
 0.8.0.1
 * New typeclass to allow transaction rollback through ExceptT
 
diff --git a/groundhog-mysql.cabal b/groundhog-mysql.cabal
--- a/groundhog-mysql.cabal
+++ b/groundhog-mysql.cabal
@@ -1,5 +1,5 @@
 name:            groundhog-mysql
-version:         0.8.0.1
+version:         0.9.0
 license:         BSD3
 license-file:    LICENSE
 author:          Boris Lykah <lykahb@gmail.com>
@@ -20,7 +20,7 @@
                    , mysql                    >= 0.1.1.3   && < 0.2
                    , bytestring               >= 0.9
                    , transformers             >= 0.2.1     && < 0.6
-                   , groundhog                >= 0.8.0.1   && < 0.9
+                   , groundhog                >= 0.9       && < 0.10
                    , monad-control            >= 0.3       && < 1.1
                    , monad-logger             >= 0.3       && < 0.4
                    , containers               >= 0.2