diff --git a/Database/Persist/Quasi.hs b/Database/Persist/Quasi.hs
--- a/Database/Persist/Quasi.hs
+++ b/Database/Persist/Quasi.hs
@@ -349,7 +349,7 @@
       , fieldType = FTTypeCon Nothing $ keyConName $ unHaskellName entName
       , fieldSqlType = idSqlType
       -- the primary field is actually a reference to the entity
-      , fieldReference = ForeignRef entName (FTTypeCon Nothing "Int64")
+      , fieldReference = ForeignRef entName (FTTypeCon Nothing "Int")
       , fieldAttrs = []
       , fieldStrict = True
       }
@@ -425,7 +425,7 @@
     addDefaultIdType = takeColsEx ps (field : keyCon : rest `mappend` setIdName)
     setFieldDef = fmap (\fd ->
       let refFieldType = if fieldType fd == FTTypeCon Nothing keyCon
-              then FTTypeCon Nothing "Int64"
+              then FTTypeCon Nothing "Int"
               else fieldType fd
       in fd { fieldReference = ForeignRef (HaskellName tableName) $ refFieldType
             })
diff --git a/persistent.cabal b/persistent.cabal
--- a/persistent.cabal
+++ b/persistent.cabal
@@ -1,5 +1,5 @@
 name:            persistent
-version:         2.0.3
+version:         2.0.3.1
 license:         MIT
 license-file:    LICENSE
 author:          Michael Snoyman <michael@snoyman.com>