diff --git a/cabal.project b/cabal.project
index 4adff71..56163fc 100644
--- a/cabal.project
+++ b/cabal.project
@@ -1,20 +1,11 @@
 packages: . hs2048
 
-index-state: 2025-04-03T07:26:54Z
-
-allow-newer:
-  all:base
+index-state: 2025-06-09T18:18:27Z
 
 if arch(wasm32)
   -- Required for TemplateHaskell. When using wasm32-wasi-cabal from
   -- ghc-wasm-meta, this is superseded by the global cabal.config.
   shared: True
 
-  -- https://github.com/haskellari/splitmix/pull/73
-  source-repository-package
-    type: git
-    location: https://github.com/amesgen/splitmix
-    tag: cea9e31bdd849eb0c17611bb99e33d590e126164
-
 package aeson
   flags: -ordered-keymap
diff --git a/flake.lock b/flake.lock
index d360509..61e10ae 100644
--- a/flake.lock
+++ b/flake.lock
@@ -25,11 +25,11 @@
       },
       "locked": {
         "host": "gitlab.haskell.org",
-        "lastModified": 1743735540,
-        "narHash": "sha256-3T1OSHseBft1ZlfXJZncz7Bfd/EmpZjxd9pWD8aOebU=",
+        "lastModified": 1747237596,
+        "narHash": "sha256-EyzTbLYHKXhEYGcIgYcYHevMjNOlizUL7lDQyv73eN8=",
         "owner": "haskell-wasm",
         "repo": "ghc-wasm-meta",
-        "rev": "0de79c61a439539ed26f68a2c419430f02e4c15e",
+        "rev": "fe5573f28327d12a1c47ec61d6bbe0cc9d7983dd",
         "type": "gitlab"
       },
       "original": {
@@ -41,11 +41,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1743448293,
-        "narHash": "sha256-bmEPmSjJakAp/JojZRrUvNcDX2R5/nuX6bm+seVaGhs=",
+        "lastModified": 1744098102,
+        "narHash": "sha256-tzCdyIJj9AjysC3OuKA+tMD/kDEDAF9mICPDU7ix0JA=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "77b584d61ff80b4cef9245829a6f1dfad5afdfa3",
+        "rev": "c8cd81426f45942bb2906d5ed2fe21d2f19d95b7",
         "type": "github"
       },
       "original": {