diff --git a/languages.toml b/languages.toml
index 2e6f5f95..5afd36c9 100644
--- a/languages.toml
+++ b/languages.toml
@@ -591,7 +591,7 @@ indent = { tab-width = 2, unit = "  " }
 
 [[grammar]]
 name = "nix"
-source = { git = "https://github.com/cstrahan/tree-sitter-nix", rev = "6b71a810c0acd49b980c50fc79092561f7cee307" }
+source = { git = "https://github.com/nix-community/tree-sitter-nix", rev = "6b71a810c0acd49b980c50fc79092561f7cee307" }
 
 [[language]]
 name = "ruby"
diff --git a/runtime/queries/nix/highlights.scm b/runtime/queries/nix/highlights.scm
index ce8e3c1a..a998aa64 100644
--- a/runtime/queries/nix/highlights.scm
+++ b/runtime/queries/nix/highlights.scm
@@ -95,6 +95,8 @@
   "."
   ","
   "="
+  ":"
+  (ellipses)
 ] @punctuation.delimiter
 
 [