diff --git a/_extensions/rostools/r3-theme/_extension.yml b/_extensions/rostools/r3-theme/_extension.yml
index 24021df..66f2778 100644
--- a/_extensions/rostools/r3-theme/_extension.yml
+++ b/_extensions/rostools/r3-theme/_extension.yml
@@ -1,10 +1,12 @@
 title: r3-theme
 author: Luke W. Johnston
-version: 1.0.3
-quarto-required: ">=1.2.0"
+version: 1.0.5
+quarto-required: ">=1.3.0"
 contributes:
   format:
     html:
+      highlight-style: a11y
+      code-line-numbers: true
       df-print: tibble
       code-overflow: scroll
       from: markdown+emoji
@@ -38,7 +40,6 @@ contributes:
         type: overlay
 
     execute:
-      freeze: auto
       warning: false
 
     callout-appearance: minimal
@@ -48,7 +49,6 @@ contributes:
 
     knitr:
       opts_chunk:
-        class-output: sourceCode
         comment: "#>"
         fig-dpi: 72
         fig-width: 5.5