diff --git a/overrides/default.nix b/overrides/default.nix
index 87b8211..22da6e4 100644
--- a/overrides/default.nix
+++ b/overrides/default.nix
@@ -1390,6 +1390,7 @@ lib.composeManyExtensions [
             "3.7.2" = "sha256-2U37IhftNYjH7sV7Nh51YpR/WjmPmmzX/aGuHsFgwf4=";
             "3.7.9" = "sha256-QHzAhjHgm4XLxY2zUdnIsd/WWMI7dJLQQAvTXC+2asQ=";
             "3.8.0" = "sha256-8k0DetamwLqkdcg8V/D2J5ja6IJSLi50CE+ZjFa7Hdc=";
+            "3.8.1" = "sha256-QXguyDxQHW9Fd3Nhmi5JzSxZQuk3HGPhhh/RGuOTZNY=";
           }.${version} or (
             lib.warn "Unknown orjson version: '${version}'. Please update getCargoHash." lib.fakeHash
           );