diff --git a/flake.lock b/flake.lock
index 450d227..4b8e88e 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,11 +2,11 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1771923393,
-        "narHash": "sha256-Fy0+UXELv9hOE8WjYhJt8fMDLYTU2Dqn3cX4BwoGBos=",
+        "lastModified": 1776329215,
+        "narHash": "sha256-a8BYi3mzoJ/AcJP8UldOx8emoPRLeWqALZWu4ZvjPXw=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "ea7f1f06811ce7fcc81d6c6fd4213150c23edcf2",
+        "rev": "b86751bc4085f48661017fa226dee99fab6c651b",
         "type": "github"
       },
       "original": {
diff --git a/scope.cc b/scope.cc
index 8709a26..190c0f4 100644
--- a/scope.cc
+++ b/scope.cc
@@ -40,7 +40,7 @@ static void prim_scope(EvalState & state, const PosIdx pos, Value ** args, Value
     v = *inner;
 }
 
-static RegisterPrimOp rp({
+static RegisterPrimOp rp(PrimOp{
     .name = "scope",
     .args = {"path", "value"},
     .doc = R"(
@@ -48,5 +48,5 @@ static RegisterPrimOp rp({
 
       Example: `scope "a.b.c" 42` evaluates to `{ a = { b = { c = 42; }; }; }`.
     )",
-    .fun = prim_scope,
+    .impl = prim_scope,
 });