diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6743839..e95d764 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,10 @@ and this project adheres to the
 
 ## Unreleased
 
+## 0.6.0.0
+
+Depend on `validation-micro` rather than `validation-selective`.
+
 ## 0.5.0.0
 
 Add 'getE', 'postE', 'tryReq' to pattern match against HTTP exceptions
diff --git a/README.md b/README.md
index 66ed645..f463364 100644
--- a/README.md
+++ b/README.md
@@ -13,11 +13,18 @@ This library provides both the client interface and authorization infrastructure
 
 ## Status
 
-This library is still in development, so expect missing funcionality.
+This library is still in development, so expect missing functionality.
 If there's anything you would like to see added, feel free to
 [open an issue](https://github.com/unfoldml/ms-graph-api/issues/new).
+In general, since the MS Graph API is quite large, features will be added to this library on a need basis.
+
+## Evolution of the library
+
 Some breaking changes might also be introduced as the library matures.
 
+We adhere to a simplified version of the [Package Versioning Policy](https://pvp.haskell.org/): breaking changes are signaled by increasing the major version number (e.g. 0.x -> 1.x ).
+
+
 ## Copyright
 
 (c) 2023-, Marco Zocca, UnfoldML AB
diff --git a/ms-graph-api.cabal b/ms-graph-api.cabal
index 9e8f98c..da54222 100644
--- a/ms-graph-api.cabal
+++ b/ms-graph-api.cabal
@@ -1,5 +1,5 @@
 name:                ms-graph-api
-version:             0.5.0.0
+version:             0.6.0.0
 synopsis:            Microsoft Graph API
 description:         Bindings to the Microsoft Graph API
 homepage:            https://github.com/unfoldml/ms-graph-api
@@ -45,7 +45,7 @@ library
                      , transformers >= 0.5
                      , unliftio
                      , uri-bytestring
-                     , validation-selective
+                     , validation-micro
                      , wai
                      , warp
   ghc-options:         -Wall
diff --git a/src/Network/OAuth2/JWT.hs b/src/Network/OAuth2/JWT.hs
index 5397c3c..00e602d 100644
--- a/src/Network/OAuth2/JWT.hs
+++ b/src/Network/OAuth2/JWT.hs
@@ -26,8 +26,8 @@ import Data.Scientific (coefficient)
 import qualified Data.Text as T (Text, unpack)
 -- time
 import Data.Time (UTCTime(..), NominalDiffTime, getCurrentTime, fromGregorian, addUTCTime, diffUTCTime)
--- validation-selective
-import Validation (Validation(..), failure, validationToEither, maybeToSuccess)
+-- validation-micro
+import Validation.Micro (Validation(..), failure, validationToEither, maybeToSuccess)
 
 
 -- | 'sub' field
diff --git a/src/Network/OAuth2/Session.hs b/src/Network/OAuth2/Session.hs
index d551e03..4b80f6e 100644
--- a/src/Network/OAuth2/Session.hs
+++ b/src/Network/OAuth2/Session.hs
@@ -65,7 +65,7 @@ import UnliftIO.STM (STM, TVar, atomically, newTVarIO, readTVar, writeTVar, modi
 -- uri-bytestring
 import URI.ByteString (URI)
 -- validation-selective
-import Validation (Validation, failure, validationToEither)
+import Validation.Micro (Validation, failure, validationToEither)
 
 import Network.OAuth2.Provider.AzureAD (OAuthCfg, azureADApp, AzureAD)
 import Network.OAuth2.JWT (jwtClaims, UserSub(..), userSub, ApiAudience, apiAudience, decValidSub, decValidExp, decValidNbf, JWTException(..))
diff --git a/stack.yaml b/stack.yaml
index e2f0639..737c277 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -36,7 +36,7 @@ packages:
 # forks / in-progress versions pinned to a git hash. For extra:
 #
 extra-deps:
-- validation-selective-0.2.0.0
+- validation-micro-1.0.0.0
 - selective-0.6
 
 # allow-newer: true