diff --git a/app/Main.hs b/app/Main.hs
index 3952c81..a3da4a2 100644
--- a/app/Main.hs
+++ b/app/Main.hs
@@ -1,3 +1,5 @@
+{-# LANGUAGE DeriveGeneric #-} -- (2)
+
 module Main where
 
 -- import MonadRandom
@@ -7,6 +9,11 @@ import Lib
 import System.IO
 import System.Process
 
+import qualified Data.ByteString.Char8 as BS
+import qualified Data.Yaml as Y
+import GHC.Generics
+import Data.Aeson
+
 getRandomMaidIndex :: (MonadRandom m) => m Int
 getRandomMaidIndex = do
   let n = length maids - 1
diff --git a/maid.cabal b/maid.cabal
index fe1a79b..44064bb 100644
--- a/maid.cabal
+++ b/maid.cabal
@@ -1,6 +1,6 @@
 cabal-version: 1.12
 
--- This file has been generated from package.yaml by hpack version 0.34.5.
+-- This file has been generated from package.yaml by hpack version 0.35.2.
 --
 -- see: https://github.com/sol/hpack
 
@@ -32,8 +32,11 @@ library
       src
   build-depends:
       MonadRandom >=0.6
+    , aeson
     , base >=4.7 && <5
+    , bytestring
     , process
+    , yaml
   default-language: Haskell2010
 
 executable maid
@@ -45,9 +48,12 @@ executable maid
   ghc-options: -threaded -rtsopts -with-rtsopts=-N
   build-depends:
       MonadRandom >=0.6
+    , aeson
     , base >=4.7 && <5
+    , bytestring
     , maid
     , process
+    , yaml
   default-language: Haskell2010
 
 test-suite maid-test
@@ -60,7 +66,10 @@ test-suite maid-test
   ghc-options: -threaded -rtsopts -with-rtsopts=-N
   build-depends:
       MonadRandom >=0.6
+    , aeson
     , base >=4.7 && <5
+    , bytestring
     , maid
     , process
+    , yaml
   default-language: Haskell2010
diff --git a/package.yaml b/package.yaml
index 053ad3b..982de77 100644
--- a/package.yaml
+++ b/package.yaml
@@ -23,6 +23,9 @@ dependencies:
   - base >= 4.7 && < 5
   - MonadRandom >= 0.6
   - process
+  - aeson
+  - yaml
+  - bytestring
 
 library:
   source-dirs: src
diff --git a/stack.yaml.lock b/stack.yaml.lock
index 7ce337e..1cbe28f 100644
--- a/stack.yaml.lock
+++ b/stack.yaml.lock
@@ -6,8 +6,8 @@
 packages: []
 snapshots:
 - completed:
+    sha256: 1867d84255dff8c87373f5dd03e5a5cb1c10a99587e26c8793e750c54e83ffdc
     size: 639139
     url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/21/0.yaml
-    sha256: 1867d84255dff8c87373f5dd03e5a5cb1c10a99587e26c8793e750c54e83ffdc
   original:
     url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/21/0.yaml