diff --git a/postgresql-simple-sop.cabal b/postgresql-simple-sop.cabal
--- a/postgresql-simple-sop.cabal
+++ b/postgresql-simple-sop.cabal
@@ -1,5 +1,5 @@
 name:                postgresql-simple-sop
-version:             0.1.0.7
+version:             0.2
 synopsis:            Generic functions for postgresql-simple
 homepage:            https://github.com/openbrainsrc/postgresql-simple-sop
 license:             MIT
@@ -15,4 +15,4 @@
   ghc-options:         -Wall -fno-warn-unused-do-bind -fno-warn-orphans -fwarn-incomplete-patterns
   build-depends:       base >= 4.6 && < 5
                      , postgresql-simple
-                     , generics-sop
+                     , generics-sop >= 0.2 && < 0.3
diff --git a/src/Database/PostgreSQL/Simple/SOP.hs b/src/Database/PostgreSQL/Simple/SOP.hs
--- a/src/Database/PostgreSQL/Simple/SOP.hs
+++ b/src/Database/PostgreSQL/Simple/SOP.hs
@@ -1,4 +1,4 @@
-{-# LANGUAGE DefaultSignatures, OverloadedStrings, ScopedTypeVariables, DeriveGeneric, FlexibleInstances, ConstraintKinds, DataKinds, GADTs, TypeOperators #-}
+{-# LANGUAGE DefaultSignatures, OverloadedStrings, ScopedTypeVariables, DeriveGeneric, FlexibleInstances, ConstraintKinds, DataKinds, GADTs, TypeOperators, FlexibleContexts #-}
 
 {- |
 
@@ -41,13 +41,13 @@
 
 -- |Generic fromRow
 gfromRow
-  :: (All FromField xs, Code a ~ '[xs], SingI xs, Generic a)
+  :: (All FromField xs, Code a ~ '[xs], Generic a)
   => RowParser a
 gfromRow = to . SOP . Z <$> hsequence (hcpure fromFieldp field)
   where fromFieldp = Proxy :: Proxy FromField
 
 -- |Generic toRow
-gtoRow :: (Generic a, Code a ~ '[xs], All ToField xs, SingI xs) => a -> [Action]
+gtoRow :: (Generic a, Code a ~ '[xs], All ToField xs) => a -> [Action]
 gtoRow a =
   case from a of
     SOP (Z xs) -> hcollapse (hcliftA toFieldP (K . toField . unI) xs)