diff --git a/tools/state.json b/tools/state.json
index cd33486..9ab831a 100644
--- a/tools/state.json
+++ b/tools/state.json
@@ -1,5 +1,5 @@
 {
   "nix_installer_action_revision": "c723f3a885e3f1d866d91f4f0c33dd44b1fc7c60",
-  "determinate_nix_tag": "v3.7.0",
+  "determinate_nix_tag": "v3.8.1",
   "checkout_action_tag": "v4.2.2"
 }