diff --git a/.Rbuildignore b/.Rbuildignore
index 37a81c6..f06fe76 100644
--- a/.Rbuildignore
+++ b/.Rbuildignore
@@ -14,3 +14,5 @@
 ^plans$
 ^doc$
 ^Meta$
+^\.gitea$
+^CLAUDE\.md$
diff --git a/vignettes/population-denominators.Rmd b/vignettes/population-denominators.Rmd
index bb42550..fae9596 100644
--- a/vignettes/population-denominators.Rmd
+++ b/vignettes/population-denominators.Rmd
@@ -3,7 +3,7 @@ title: "Population denominators"
 output: rmarkdown::html_vignette
 vignette: >
   %\VignetteIndexEntry{Population denominators}
-  %\VignetteEngine{knitr::knitr}
+  %\VignetteEngine{knitr::rmarkdown}
   %\VignetteEncoding{UTF-8}
 ---