diff --git a/cabal.project b/cabal.project
index 1da4736..f9164f2 100644
--- a/cabal.project
+++ b/cabal.project
@@ -8,9 +8,13 @@ index-state: 2022-02-19T11:25:10Z
 extra-lib-dirs:
   /usr/pgsql-14/lib
 
-package pg-entity
+package *
   ghc-options:
     "-L /usr/pgsql-14/lib" 
   haddock-options:
     "--optghc=-L /usr/pgsql-14/lib" 
 
+source-repository-package
+  type: git
+  location: https://github.com/ElderEphemera/deriving-th
+  tag: c1ea0852f03e823d38ad589c4b61949a3c21e1a1
diff --git a/pg-entity.cabal b/pg-entity.cabal
index c7bbe3a..a90790c 100644
--- a/pg-entity.cabal
+++ b/pg-entity.cabal
@@ -93,6 +93,7 @@ library
     , uuid              ^>= 1.3
     , vector            ^>= 0.12
     , text-display      ^>= 0.0
+    , deriving-th
 
 test-suite entity-test
   import:         common-extensions
diff --git a/src/Database/PostgreSQL/Entity/Internal/TH.hs b/src/Database/PostgreSQL/Entity/Internal/TH.hs
new file mode 100644
index 0000000..1f2a3db
--- /dev/null
+++ b/src/Database/PostgreSQL/Entity/Internal/TH.hs
@@ -0,0 +1,6 @@
+{-# LANGUAGE TemplateHaskell #-}
+
+module Database.PostgreSQL.Entity.TH where
+
+import DerivingTH.Class
+import Language.Haskell.TH