diff --git a/NEWS.md b/NEWS.md
index 789ef720..b36fca2f 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,5 +1,9 @@
 # epichains (development version)
 
+## Package
+
+- Removed the `as_is = TRUE` setting in vignette YAML headers to avoid partial incompatibility with incoming pkgdown versions.
+
 # epichains 0.1.0
 
 We are excited to announce the first minor release of `{epichains}`.
diff --git a/inst/WORDLIST b/inst/WORDLIST
index 03b3c263..87574536 100644
--- a/inst/WORDLIST
+++ b/inst/WORDLIST
@@ -2,6 +2,7 @@ Blumberg
 Borel
 CMD
 COVID
+Codecov
 Epiverse
 Eq
 Inf
@@ -13,6 +14,7 @@ Poisson
 R's
 TransPhylo
 Vukosi
+YAML
 Zhian
 borel
 bpmodels
@@ -28,10 +30,12 @@ fn
 frac
 geosocial
 geq
+gh
 infectee
 infectees
 infector
 infectors
+io
 json
 kS
 linelist
@@ -45,12 +49,14 @@ outbreaker
 outbreakr
 packagename
 parameterised
+pkgdown
 poisson
 rborel
 ringbp
 simulacr
 simulist
 superspreading
+svg
 th
 truncdist
 unnormalised
diff --git a/vignettes/branching_process_literature.Rmd b/vignettes/branching_process_literature.Rmd
index b06dd34c..5f5f977f 100644
--- a/vignettes/branching_process_literature.Rmd
+++ b/vignettes/branching_process_literature.Rmd
@@ -4,8 +4,6 @@ output:
   bookdown::html_vignette2:
     fig_caption: yes
     code_folding: show
-pkgdown:
-  as_is: true
 bibliography: branching_process_literature.json
 link-citations: true
 vignette: >
diff --git a/vignettes/design-principles.Rmd b/vignettes/design-principles.Rmd
index 5439ce93..4c6f52e1 100644
--- a/vignettes/design-principles.Rmd
+++ b/vignettes/design-principles.Rmd
@@ -1,8 +1,6 @@
 ---
 title: "Design Principles for {epichains}"
 subtitle: "An R package for simulating, handling, and analysing transmission chains in R"
-pkgdown:
-  as_is: true
 bibliography: references.json
 output: rmarkdown::html_vignette
 vignette: >
diff --git a/vignettes/projecting_incidence.Rmd b/vignettes/projecting_incidence.Rmd
index 1ab0568c..b03ad1d6 100644
--- a/vignettes/projecting_incidence.Rmd
+++ b/vignettes/projecting_incidence.Rmd
@@ -5,8 +5,6 @@ output:
   bookdown::html_vignette2:
     fig_caption: yes
     code_folding: show
-pkgdown:
-  as_is: true
 bibliography: references.json
 link-citations: true
 vignette: >