diff --git a/flake.nix b/flake.nix
index efa9504..ab068a6 100644
--- a/flake.nix
+++ b/flake.nix
@@ -75,7 +75,8 @@
         # packages.default = pkgs.hello;
 
         devShells.default = let
-          ghc' = pkgs.haskell.packages.ghc914.ghcWithHoogle (
+          # https://downloads.haskell.org/~ghc/9.10.3/docs/users_guide/index.html
+          ghc' = pkgs.haskell.packages.ghc9103.ghcWithHoogle (
             self:
               with self; [
                 relude
@@ -83,10 +84,12 @@
                 aeson
                 random
                 neat-interpolation
+
                 # maths
                 primes
                 arithmoi
                 parallel
+
                 # graphing libraries!
                 Chart
                 Chart-cairo
@@ -107,13 +110,11 @@
         in
           pkgs.mkShell {
             packages = with pkgs; [
-              haskell.compiler.native-bignum.ghc9141
-
               cowsay
 
               alejandra
 
-              # ghc'
+              ghc'
               clean
 
               haskell-language-server