diff --git a/Database/Persist/Postgresql.hs b/Database/Persist/Postgresql.hs
--- a/Database/Persist/Postgresql.hs
+++ b/Database/Persist/Postgresql.hs
@@ -258,12 +258,13 @@
             PersistNull -> Right Nothing
             PersistByteString a -> Right $ Just $ BSU.toString a
             _ -> Left $ "Invalid default column: " ++ show d
-    getType "int4" = Right $ SqlInteger
+    getType "int4" = Right $ SqlInt32
+    getType "int8" = Right $ SqlInteger
     getType "varchar" = Right $ SqlString
     getType "date" = Right $ SqlDay
     getType "bool" = Right $ SqlBool
     getType "timestamp" = Right $ SqlDayTime
-    getType "float4" = Right $ SqlReal
+    getType "float8" = Right $ SqlReal
     getType "bytea" = Right $ SqlBlob
     getType a = Left $ "Unknown type: " ++ a
 getColumn _ _ x =
@@ -317,8 +318,9 @@
 
 showSqlType :: SqlType -> String
 showSqlType SqlString = "VARCHAR"
-showSqlType SqlInteger = "INTEGER"
-showSqlType SqlReal = "REAL"
+showSqlType SqlInt32 = "INT4"
+showSqlType SqlInteger = "INT8"
+showSqlType SqlReal = "DOUBLE PRECISION"
 showSqlType SqlDay = "DATE"
 showSqlType SqlTime = "TIME"
 showSqlType SqlDayTime = "TIMESTAMP"
diff --git a/persistent-postgresql.cabal b/persistent-postgresql.cabal
--- a/persistent-postgresql.cabal
+++ b/persistent-postgresql.cabal
@@ -1,5 +1,5 @@
 name:            persistent-postgresql
-version:         0.2.0
+version:         0.2.1
 license:         BSD3
 license-file:    LICENSE
 author:          Michael Snoyman <michael@snoyman.com>
@@ -19,7 +19,7 @@
                      transformers >= 0.2.1 && < 0.3,
                      MonadCatchIO-transformers >= 0.2.2 && < 0.3,
                      HDBC-postgresql >= 2.2.3.1 && < 2.3,
-                     persistent >= 0.2.0 && < 0.3,
+                     persistent >= 0.2.1 && < 0.3,
                      containers >= 0.2 && < 0.4,
                      bytestring >= 0.9 && < 0.10,
                      utf8-string >= 0.3.6 && < 0.4