diff --git a/flake.nix b/flake.nix
index 91cf43d0fe..f05697ce3d 100644
--- a/flake.nix
+++ b/flake.nix
@@ -31,7 +31,7 @@
       let pkgs = haskellNix.legacyPackages.${system}.appendOverlays [android26]; in
       let drv' = { extra-modules, pkgs', ... }: pkgs'.haskell-nix.project {
         compiler-nix-name = "ghc963";
-        index-state = "2023-12-12T00:00:00Z";
+        index-state = "2024-06-01T00:00:00Z";
         # We need this, to specify we want the cabal project.
         # If the stack.yaml was dropped, this would not be necessary.
         projectFileName = "cabal.project";