diff --git a/DESCRIPTION b/DESCRIPTION
index d16ebd7..e2d6c02 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -31,6 +31,5 @@ BugReports: https://github.com/tmsalab/slcm/issues
 Roxygen: list(markdown = TRUE)
 Suggests: 
     altdoc,
-    knitr,
     rmarkdown
 VignetteBuilder: knitr
diff --git a/vignettes/estimating-with-slcm.Rmd b/vignettes/estimating-with-slcm.qmd
similarity index 100%
rename from vignettes/estimating-with-slcm.Rmd
rename to vignettes/estimating-with-slcm.qmd