diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,11 +1,18 @@
 # Changelog for persistent-postgresql
 
-## 2.13.6 (unreleased)
+## 2.13.6.1
 
+* [#1518](https://github.com/yesodweb/persistent/pull/1518)
+    * Normalize postgres type aliases to prevent noop migrations
+
+## 2.13.6
+
 * [#1511](https://github.com/yesodweb/persistent/pull/1511)
    * Add the `createPostgresqlPoolTailored` function to support creating
      connection pools with a custom connection creation function.
    * Expose `getServerVersion` and `createBackend` for user's convenience.
+* [#1516](https://github.com/yesodweb/persistent/pull/1516)
+   * Support postgresql-simple 0.7 and postgresql-libpq 0.10
 
 ## 2.13.5.2
 
diff --git a/Database/Persist/Postgresql.hs b/Database/Persist/Postgresql.hs
--- a/Database/Persist/Postgresql.hs
+++ b/Database/Persist/Postgresql.hs
@@ -1103,7 +1103,15 @@
 -- | Intelligent comparison of SQL types, to account for SqlInt32 vs SqlOther integer
 sqlTypeEq :: SqlType -> SqlType -> Bool
 sqlTypeEq x y =
-    T.toCaseFold (showSqlType x) == T.toCaseFold (showSqlType y)
+    let
+        -- Non exhaustive helper to map postgres aliases to the same name. Based on
+        -- https://www.postgresql.org/docs/9.5/datatype.html.
+        -- This prevents needless `ALTER TYPE`s when the type is the same.
+        normalize "int8"    = "bigint"
+        normalize "serial8" = "bigserial"
+        normalize v         = v
+    in
+        normalize (T.toCaseFold (showSqlType x)) == normalize (T.toCaseFold (showSqlType y))
 
 findAlters
     :: [EntityDef]
@@ -1369,7 +1377,7 @@
     , escapeC cname
     ]
 
--- | Get the SQL string for the table that a PeristEntity represents.
+-- | Get the SQL string for the table that a PersistEntity represents.
 -- Useful for raw SQL queries.
 tableName :: (PersistEntity record) => record -> Text
 tableName = escapeE . tableDBName
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:         2.13.6
+version:         2.13.6.1
 license:         MIT
 license-file:    LICENSE
 author:          Felipe Lessa, Michael Snoyman <michael@snoyman.com>
@@ -25,8 +25,8 @@
                    , containers            >= 0.5
                    , monad-logger          >= 0.3.25
                    , mtl
-                   , postgresql-simple     >= 0.6.1    && < 0.7
-                   , postgresql-libpq      >= 0.9.4.2  && < 0.10
+                   , postgresql-simple     >= 0.6.1    && < 0.8
+                   , postgresql-libpq      >= 0.9.4.2  && < 0.11
                    , resourcet             >= 1.1.9
                    , resource-pool
                    , string-conversions
diff --git a/test/EquivalentTypeTestPostgres.hs b/test/EquivalentTypeTestPostgres.hs
--- a/test/EquivalentTypeTestPostgres.hs
+++ b/test/EquivalentTypeTestPostgres.hs
@@ -21,7 +21,7 @@
 
 share [mkPersist sqlSettings, mkMigrate "migrateAll1"] [persistLowerCase|
 EquivalentType sql=equivalent_types
-    field1 Int
+    field1 Int    sqltype=bigint
     field2 T.Text sqltype=text
     field3 T.Text sqltype=us_postal_code
     deriving Eq Show
@@ -29,7 +29,7 @@
 
 share [mkPersist sqlSettings, mkMigrate "migrateAll2"] [persistLowerCase|
 EquivalentType2 sql=equivalent_types
-    field1 Int
+    field1 Int    sqltype=int8
     field2 T.Text
     field3 T.Text sqltype=us_postal_code
     deriving Eq Show