diff --git a/news/changelog-1.7.md b/news/changelog-1.7.md
index 8b0f3bed641..e53ec5ae2c7 100644
--- a/news/changelog-1.7.md
+++ b/news/changelog-1.7.md
@@ -166,6 +166,7 @@ All changes included in 1.7:
 - ([#12369](https://github.com/quarto-dev/quarto-cli/pull/12369)): `quarto preview` correctly throws a YAML validation error when a `format` key does not conform.
 - ([#12238](https://gijit.com/quarto-dev/quarto-cli/issues/12238)): Very long error (e.g. in Jupyter Notenook with backtrace) are now no more truncated in the console.
 - ([#9867](https://github.com/quarto-dev/quarto-cli/issues/9867)): Blank lines are now trimmed in Raw HTML Table blocks.
+- ([#12459](https://github.com/quarto-dev/quarto-cli/pull/12459)): Add `.page-inset-*` classes to completions.
 
 ## Languages
 
diff --git a/src/resources/editor/tools/attrs.yml b/src/resources/editor/tools/attrs.yml
index 55dba561903..23e6110dd00 100644
--- a/src/resources/editor/tools/attrs.yml
+++ b/src/resources/editor/tools/attrs.yml
@@ -174,6 +174,12 @@
       doc: Extend content on the left to a wider region
     - value: ".column-page-right"
       doc: Extend content on the right to a wider region
+    - value: ".column-page-inset"
+      doc: Extend content to a wider region (with a small margin)
+    - value: ".column-page-inset-left"
+      doc: Extend content on the left to a wider region (with a small margin)
+    - value: ".column-page-inset-right"
+      doc: Extend content on the right to a wider region (with a small margin)
     - value: ".column-screen-inset"
       doc: Extend content to full width (with a small margin)
     - value: ".column-screen-inset-shaded"