diff --git a/Database/Beam/Migrate/Generics/Types.hs b/Database/Beam/Migrate/Generics/Types.hs
index 553e208b..0cf9b2c8 100644
--- a/Database/Beam/Migrate/Generics/Types.hs
+++ b/Database/Beam/Migrate/Generics/Types.hs
@@ -1,3 +1,5 @@
+{-# LANGUAGE UndecidableInstances #-}
+
 module Database.Beam.Migrate.Generics.Types where
 
 import           Database.Beam.Migrate.Types
diff --git a/beam-migrate.cabal b/beam-migrate.cabal
index f53b280d..9cf3722c 100644
--- a/beam-migrate.cabal
+++ b/beam-migrate.cabal
@@ -69,13 +69,12 @@ library
                        mtl                  >=2.2     && <2.3,
                        scientific           >=0.3     && <0.4,
                        vector               >=0.11    && <0.13,
-                       containers           >=0.5     && <0.6,
                        unordered-containers >=0.2     && <0.3,
                        hashable             >=1.2     && <1.3,
                        parallel             >=3.2     && <3.3,
                        deepseq              >=1.4     && <1.5,
                        ghc-prim             >=0.5     && <0.6,
-                       containers           >=0.5     && <0.6,
+                       containers           >=0.5     && <0.7,
                        haskell-src-exts     >=1.18    && <1.21,
                        pretty               >=1.1     && <1.2,
                        dependent-map        >=0.2     && <0.3,