diff --git a/dotagents b/dotagents
index c808586cb..39583cdde 160000
--- a/dotagents
+++ b/dotagents
@@ -1 +1 @@
-Subproject commit c808586cb914084db1a4e043c561fd72c4ae2d80
+Subproject commit 39583cdde423d96cfcf96c1e47b06ef668c11003
diff --git a/overlays/default.nix b/overlays/default.nix
index c6610daca..22b1534bb 100644
--- a/overlays/default.nix
+++ b/overlays/default.nix
@@ -10,6 +10,10 @@
         passthru = (oldAttrs.passthru or { }) // {
           lua = prev.lua5_4;
         };
+        # The nightly neovim functionaltest suite (e.g. treesitter) is flaky and
+        # fails on some revs when built from source (cache miss). Skip checks so
+        # a neovim test regression does not break nix-nixos / e2e NixOS builds.
+        doCheck = false;
       }))
       // {
         lua = prev.lua5_4;