diff --git a/stack.yaml b/stack.yaml
index 6ec2fb1..f9b7cc9 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,8 +1,16 @@
 flags: {}
 extra-package-dbs: []
 packages:
-- '.'
-extra-deps: []
-resolver: lts-8.18
+  - '.'
+extra-deps:
+  - brick-0.45
+  - config-ini-0.2.4.0
+  - data-clist-0.1.2.1
+  - text-zipper-0.10.1
+  - word-wrap-0.4.1
+  - QuickCheck-2.11.3
+resolver: lts-13.0
 nix:
-  packages: [gcc, ncurses]
+  packages:
+    - gcc
+    - ncurses
diff --git a/tetris.cabal b/tetris.cabal
index 3cb55e0..7903dc9 100644
--- a/tetris.cabal
+++ b/tetris.cabal
@@ -19,13 +19,13 @@ library
                      , UI.PickLevel
                      , UI.Game
   build-depends:       base >= 4.7 && < 5
-                     , brick                >= 0.17 && < 0.18
-                     , containers           >= 0.5.7 && < 0.6
-                     , microlens            >= 0.4.8 && < 0.5
-                     , microlens-th         >= 0.4.1 && < 0.5
-                     , linear               >= 1.20.6 && < 1.21
-                     , random               >= 1.1 && < 1.2
-                     , vty                  >= 5.15 && < 5.16
+                     , brick
+                     , containers
+                     , microlens
+                     , microlens-th
+                     , linear
+                     , random
+                     , vty
 
   default-language:    Haskell2010
 
@@ -34,9 +34,9 @@ executable tetris
   main-is:             Main.hs
   ghc-options:         -threaded -rtsopts -with-rtsopts=-N
   build-depends:       base >= 4.7 && < 5
-                     , directory            >= 1.3.0 && < 1.4
-                     , filepath             >= 1.4.1 && < 1.5
-                     , optparse-applicative >= 0.13.2.0 && < 0.14
+                     , directory
+                     , filepath
+                     , optparse-applicative
                      , tetris
   default-language:    Haskell2010