diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,7 @@
+## 2.6.2.2
+
+* Because `text` and `varchar` are synonyms in Postgresql, don't attempt to migrate between them. [#762](https://github.com/yesodweb/persistent/pull/762)
+
 ## 2.6.2.1
 
 * Fix bug where, if a custom column width was set, the field would be migrated every time [#742](https://github.com/yesodweb/persistent/pull/742)
diff --git a/Database/Persist/Postgresql.hs b/Database/Persist/Postgresql.hs
--- a/Database/Persist/Postgresql.hs
+++ b/Database/Persist/Postgresql.hs
@@ -619,7 +619,7 @@
 
 type SafeToRemove = Bool
 
-data AlterColumn = Type SqlType Text
+data AlterColumn = ChangeType SqlType Text
                  | IsNull | NotNull | Add' Column | Drop SafeToRemove
                  | Default Text | NoDefault | Update' Text
                  | AddReference DBName [DBName] [Text] | DropReference DBName
@@ -640,7 +640,7 @@
     let sqlv=T.concat ["SELECT "
                           ,"column_name "
                           ,",is_nullable "
-                          ,",udt_name "
+                          ,",COALESCE(domain_name, udt_name)" -- See DOMAINS below
                           ,",column_default "
                           ,",numeric_precision "
                           ,",numeric_scale "
@@ -651,6 +651,12 @@
                           ,"AND table_name=? "
                           ,"AND column_name <> ?"]
 
+-- DOMAINS Postgres supports the concept of domains, which are data types with optional constraints.
+-- An app might make an "email" domain over the varchar type, with a CHECK that the emails are valid
+-- In this case the generated SQL should use the domain name: ALTER TABLE users ALTER COLUMN foo TYPE email
+-- This code exists to use the domain name (email), instead of the underlying type (varchar).
+-- This is tested in EquivalentTypeTest.hs
+
     stmt <- getter sqlv
     let vals =
             [ PersistText $ unDBName $ entityDB def
@@ -801,6 +807,7 @@
     getType "int4"        = Right SqlInt32
     getType "int8"        = Right SqlInt64
     getType "varchar"     = Right SqlString
+    getType "text"        = Right SqlString
     getType "date"        = Right SqlDay
     getType "bool"        = Right SqlBool
     getType "timestamptz" = Right SqlDayTime
@@ -851,12 +858,12 @@
                     -- need to make sure that TIMESTAMP WITHOUT TIME ZONE is
                     -- treated as UTC.
                     | sqltype == SqlDayTime && sqltype' == SqlOther "timestamp" =
-                        [(name, Type sqltype $ T.concat
+                        [(name, ChangeType sqltype $ T.concat
                             [ " USING "
                             , escape name
                             , " AT TIME ZONE 'UTC'"
                             ])]
-                    | otherwise = [(name, Type sqltype "")]
+                    | otherwise = [(name, ChangeType sqltype "")]
                 modDef =
                     if def == def'
                         then []
@@ -935,7 +942,7 @@
     ]
 
 showAlter :: DBName -> AlterColumn' -> Text
-showAlter table (n, Type t extra) =
+showAlter table (n, ChangeType t extra) =
     T.concat
         [ "ALTER TABLE "
         , escape table
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:         2.6.2.1
+version:         2.6.2.2
 license:         MIT
 license-file:    LICENSE
 author:          Felipe Lessa, Michael Snoyman <michael@snoyman.com>