diff --git a/CHANGELOG.md b/CHANGELOG.md
index f748c75a..6ed3230c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -106,6 +106,8 @@ The changelog is available [on GitHub][2].
   those versions are added to the `allow_failures` section of matrix.
 
   _Note:_ For the Stack failure reasons see [this issue](https://github.com/commercialhaskell/stack/issues/4488).
+* [#434](https://github.com/kowainik/summoner/issues/434):
+  Move to `validation-selective`.
 
 ## 1.4.0.0 – Dec 25, 2019 🎅
 
diff --git a/stack.yaml b/stack.yaml
index 3e2b6c78..dbec01c1 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -7,3 +7,4 @@ packages:
 extra-deps:
   - generic-data-0.8.0.0
   - hspec-hedgehog-0.0.1.1
+  - validation-selective-0.0.0.0
diff --git a/summoner-cli/src/Summoner/CLI.hs b/summoner-cli/src/Summoner/CLI.hs
index bf6362ee..e245de1b 100644
--- a/summoner-cli/src/Summoner/CLI.hs
+++ b/summoner-cli/src/Summoner/CLI.hs
@@ -41,9 +41,9 @@ import Options.Applicative (Parser, ParserInfo, ParserPrefs, argument, command,
                             subparser, subparserInline, switch, value)
 import Options.Applicative.Help.Chunk (stringChunk)
 import Relude.Extra.Enum (universe)
-import Relude.Extra.Validation (Validation (..))
 import System.Directory (doesFileExist)
 import System.Info (os)
+import Validation (Validation (..))
 
 import Summoner.Ansi (errorMessage, infoMessage, successMessage, warningMessage)
 import Summoner.Config (Config, ConfigP (..), PartialConfig, defaultConfig, finalise,
diff --git a/summoner-cli/src/Summoner/Config.hs b/summoner-cli/src/Summoner/Config.hs
index 6d2d8260..6e6eab3e 100644
--- a/summoner-cli/src/Summoner/Config.hs
+++ b/summoner-cli/src/Summoner/Config.hs
@@ -29,9 +29,9 @@ module Summoner.Config
 
 import Data.List (lookup)
 import Generic.Data (gmappend, gmempty)
-import Relude.Extra.Validation (Validation (..))
 import Shellmet (($?), ($|))
 import Toml (Key, TomlBiMap, TomlCodec, (.=))
+import Validation (Validation (..))
 
 import Summoner.CustomPrelude (CustomPrelude (..), customPreludeT)
 import Summoner.Decision (Decision (..))
diff --git a/summoner-cli/summoner.cabal b/summoner-cli/summoner.cabal
index 7be6b3b2..459fd99c 100644
--- a/summoner-cli/summoner.cabal
+++ b/summoner-cli/summoner.cabal
@@ -74,7 +74,6 @@ common common-options
   mixins:              base hiding (Prelude)
                      , relude (Relude as Prelude
                               , Relude.Extra.Enum
-                              , Relude.Extra.Validation
                               , Relude.Unsafe
                               )
 
@@ -152,6 +151,7 @@ library
                      , text ^>= 1.2.3.0
                      , time >= 1.8 && < 1.10
                      , tomland ^>= 1.2.1.0
+                     , validation-selective ^>= 0.0.0.0
 
 executable summon
   import:              common-options
@@ -187,6 +187,7 @@ test-suite summoner-test
                      , tomland
                      , tree-diff >= 0.0.2 && < 0.2
                      , summoner
+                     , validation-selective
 
   ghc-options:         -threaded
                        -rtsopts
diff --git a/summoner-cli/test/Test/TomlSpec.hs b/summoner-cli/test/Test/TomlSpec.hs
index 5be0720c..3d233d20 100644
--- a/summoner-cli/test/Test/TomlSpec.hs
+++ b/summoner-cli/test/Test/TomlSpec.hs
@@ -4,10 +4,10 @@ module Test.TomlSpec
 
 import Hedgehog (MonadGen, forAll, tripping)
 import Relude.Extra.Enum (universe)
-import Relude.Extra.Validation (Validation (..))
 import Test.Hspec (Spec, describe, it, shouldReturn, shouldSatisfy)
 import Test.Hspec.Hedgehog (hedgehog)
 import Toml.Bi.Code (decode, encode)
+import Validation (Validation (..))
 
 import Summoner.Config (ConfigP (..), PartialConfig, configCodec, defaultConfig, finalise)
 import Summoner.CustomPrelude (CustomPrelude (..))
diff --git a/summoner-tui/src/Summoner/Tui/Validation.hs b/summoner-tui/src/Summoner/Tui/Validation.hs
index 02f070d3..42738eae 100644
--- a/summoner-tui/src/Summoner/Tui/Validation.hs
+++ b/summoner-tui/src/Summoner/Tui/Validation.hs
@@ -19,7 +19,7 @@ module Summoner.Tui.Validation
 import Brick.Forms (formState, invalidFields, setFieldValid, setFormFocus)
 import Lens.Micro (Lens', (%~), (.~), (^.))
 import Relude.Extra.Enum (universe)
-import Relude.Extra.Validation (Validation (..))
+import Validation (Validation (..))
 
 import Summoner.Text (moduleNameValid, packageNameValid, packageToModule)
 import Summoner.Tui.Form (KitForm, SummonForm (..), getCurrentFocus, mkForm)
diff --git a/summoner-tui/summoner-tui.cabal b/summoner-tui/summoner-tui.cabal
index 6d2191a1..c95308b1 100644
--- a/summoner-tui/summoner-tui.cabal
+++ b/summoner-tui/summoner-tui.cabal
@@ -31,7 +31,6 @@ common common-options
   mixins:              base hiding (Prelude)
                      , relude (Relude as Prelude
                               , Relude.Extra.Enum
-                              , Relude.Extra.Validation
                               )
   ghc-options:         -Wall
                        -Wcompat
@@ -84,6 +83,7 @@ library
                      , microlens-th ^>= 0.4
                      , summoner ^>= 1.4.0
                      , text ^>= 1.2.3.0
+                     , validation-selective ^>= 0.0.0.0
                      , vty >= 5.25 && < 5.27
 
 executable summon-tui