diff --git a/src/lib/Witch/Instances.hs b/src/lib/Witch/Instances.hs
--- a/src/lib/Witch/Instances.hs
+++ b/src/lib/Witch/Instances.hs
@@ -37,6 +37,9 @@
 import qualified Witch.TryFromException as TryFromException
 import qualified Witch.Utility as Utility
 
+instance From.From a a where
+  from = id
+
 -- Int8
 
 -- | Uses 'fromIntegral'.
diff --git a/witch.cabal b/witch.cabal
--- a/witch.cabal
+++ b/witch.cabal
@@ -1,7 +1,7 @@
 cabal-version: 2.2
 
 name: witch
-version: 0.3.1.0
+version: 0.3.2.0
 synopsis: Convert values from one type into another.
 description: Witch converts values from one type into another.