diff --git a/DESCRIPTION b/DESCRIPTION
index 2fd4c4e..f1f997e 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -32,7 +32,6 @@ Suggests:
   survey,
     knitr,
     rmarkdown,
-    rmdformats,
     testthat
 Enhances:
   brms,
diff --git a/vignettes/categorical.Rmd b/vignettes/categorical.Rmd
index c01383a..a3750ca 100644
--- a/vignettes/categorical.Rmd
+++ b/vignettes/categorical.Rmd
@@ -2,7 +2,11 @@
 title: "Plotting interactions among categorical variables in regression models"
 author: "Jacob Long"
 date: "`r Sys.Date()`"
-output: rmdformats::html_clean
+output: 
+  html_document:
+      toc: true
+      toc_float: true
+      theme: "spacelab"
 vignette: >
   %\VignetteIndexEntry{Plotting interactions among categorical variables in regression models}
   %\VignetteEngine{knitr::rmarkdown}
diff --git a/vignettes/interactions.Rmd b/vignettes/interactions.Rmd
index df857db..c78e43a 100644
--- a/vignettes/interactions.Rmd
+++ b/vignettes/interactions.Rmd
@@ -2,7 +2,11 @@
 title: "Exploring interactions with continuous predictors in regression models"
 author: "Jacob Long"
 date: "`r Sys.Date()`"
-output: rmdformats::html_clean
+output: 
+  html_document:
+    toc: true
+    toc_float: true
+    theme: "spacelab"
 vignette: >
   %\VignetteIndexEntry{Exploring interactions with continuous predictors in regression models}
   %\VignetteEngine{knitr::rmarkdown}