diff --git a/DESCRIPTION b/DESCRIPTION
index 322555903..e691a8dbf 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Type: Package
 Package: rticles
 Title: Article Formats for R Markdown
-Version: 0.27.10
+Version: 0.27.11
 Authors@R: c(
     person("JJ", "Allaire", , "jj@posit.co", role = "aut"),
     person("Yihui", "Xie", , "xie@yihui.name", role = "aut",
diff --git a/NEWS.md b/NEWS.md
index e5be27f29..3d80869b4 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -36,6 +36,8 @@ supported by the `copernicus.cls`, and fix an issue where the section headers we
 
 ## MINOR CHANGES
 
+- Patch `WileyNDJ` template used in `sim_article()` to fix an issue with `etex` package not being useful anymore in recent LaTeX distributions (#593).
+
 - Update all templates to work with Pandoc 3.2.1 by adding the definition of new `\pandocbounded` command used by Pandoc's LaTeX writers (see more at https://github.com/jgm/pandoc/releases/tag/3.2.1 and https://github.com/jgm/pandoc/issues/9660) (#571, #576).
 
 # rticles 0.27
diff --git a/inst/rmarkdown/templates/sim/resources/template.tex b/inst/rmarkdown/templates/sim/resources/template.tex
index 98c7b4fc1..0e58440e7 100644
--- a/inst/rmarkdown/templates/sim/resources/template.tex
+++ b/inst/rmarkdown/templates/sim/resources/template.tex
@@ -1,4 +1,4 @@
-\documentclass[AMA,STIX1COL$for(classoption)$,$classoption$$endfor$]{WileyNJD-v5}
+\documentclass[AMA,Times1COL$for(classoption)$,$classoption$$endfor$]{WileyNJD-v5}
 
 $if(longtable)$
 \usepackage{longtable}
diff --git a/inst/rmarkdown/templates/sim/skeleton/Fonts/Stix/STIX-Bold.otf b/inst/rmarkdown/templates/sim/skeleton/Fonts/Stix/STIX-Bold.otf
deleted file mode 100644
index 0b3011b22..000000000
Binary files a/inst/rmarkdown/templates/sim/skeleton/Fonts/Stix/STIX-Bold.otf and /dev/null differ
diff --git a/inst/rmarkdown/templates/sim/skeleton/Fonts/Stix/STIX-BoldItalic.otf b/inst/rmarkdown/templates/sim/skeleton/Fonts/Stix/STIX-BoldItalic.otf
deleted file mode 100644
index f7407e315..000000000
Binary files a/inst/rmarkdown/templates/sim/skeleton/Fonts/Stix/STIX-BoldItalic.otf and /dev/null differ
diff --git a/inst/rmarkdown/templates/sim/skeleton/Fonts/Stix/STIX-Italic.otf b/inst/rmarkdown/templates/sim/skeleton/Fonts/Stix/STIX-Italic.otf
deleted file mode 100644
index b79db47fe..000000000
Binary files a/inst/rmarkdown/templates/sim/skeleton/Fonts/Stix/STIX-Italic.otf and /dev/null differ
diff --git a/inst/rmarkdown/templates/sim/skeleton/Fonts/Stix/STIX-Regular.otf b/inst/rmarkdown/templates/sim/skeleton/Fonts/Stix/STIX-Regular.otf
deleted file mode 100644
index 2b76eb2cb..000000000
Binary files a/inst/rmarkdown/templates/sim/skeleton/Fonts/Stix/STIX-Regular.otf and /dev/null differ
diff --git a/inst/rmarkdown/templates/sim/skeleton/Fonts/Stix/STIXMath-Regular.otf b/inst/rmarkdown/templates/sim/skeleton/Fonts/Stix/STIXMath-Regular.otf
deleted file mode 100644
index 1865a1068..000000000
Binary files a/inst/rmarkdown/templates/sim/skeleton/Fonts/Stix/STIXMath-Regular.otf and /dev/null differ
diff --git a/inst/rmarkdown/templates/sim/skeleton/WileyNJD-v5.cls b/inst/rmarkdown/templates/sim/skeleton/WileyNJD-v5.cls
index 70af76980..e768b6e49 100644
--- a/inst/rmarkdown/templates/sim/skeleton/WileyNJD-v5.cls
+++ b/inst/rmarkdown/templates/sim/skeleton/WileyNJD-v5.cls
@@ -352,8 +352,11 @@
 \ProcessOptions
 \LoadClass[twoside,fleqn,onecolumn]{article}%
 
-\usepackage{etex}%
-\reserveinserts{28}% included etex package and \reserveinserts{...} to avoid no room for \newinserts, \newcounts or \newskips etc.
+\usepackage{etex}
+% Modification by as etex is not used anymore in modern LaTeX
+\@ifundefined{reserveinserts}{}{%
+  \reserveinserts{28}%
+}
 \RequirePackage{graphicx,multicol}%
 \RequirePackage{multirow}%
 \RequirePackage{cuted}%
diff --git a/tests/testit/test-formats.R b/tests/testit/test-formats.R
index b79b39521..c620cc7b3 100644
--- a/tests/testit/test-formats.R
+++ b/tests/testit/test-formats.R
@@ -10,8 +10,7 @@ test_format <- function(name, output_options = NULL, skip = NULL) {
   # work in a temp directory
   dir <- tempfile()
   dir.create(dir)
-  oldwd <- setwd(dir)
-  on.exit(setwd(oldwd), add = TRUE)
+  withr::local_dir(dir)
 
   # create a draft of the format
   testdoc <- paste0(name, "_article", ".Rmd")
@@ -24,7 +23,7 @@ test_format <- function(name, output_options = NULL, skip = NULL) {
     "Rendering the ", name, " format...",
     if (!is.null(output_options)) " (with output options)"
   )
-  output_file <- rmarkdown::render(testdoc, output_options = output_options, quiet = TRUE)
+  output_file <- rmarkdown::render(testdoc, output_options = output_options, quiet = !interactive())
   assert(paste(name, "format works"), {
     file.exists(output_file)
   })
@@ -77,7 +76,7 @@ test_format("rjournal")
 test_format("rsos")
 test_format("rss")
 test_format("sage")
-test_format("sim", skip = TRUE) # sim format currently broken
+test_format("sim")
 test_format("springer", skip = !rmarkdown::pandoc_available("2.11.4"))
 test_format("tf", output_options = list(reference_style = "CAD"))
 test_format("tf", output_options = list(reference_style = "APA"))
diff --git a/tools/create_wiley_cls_patch.R b/tools/create_wiley_cls_patch.R
new file mode 100644
index 000000000..31ccc808c
--- /dev/null
+++ b/tools/create_wiley_cls_patch.R
@@ -0,0 +1,13 @@
+# Save the patch file in tools folder
+patch_file <- "tools/wiley-cls-etex-fix.patch"
+# Apply the patch using processx
+result <- processx::run("git", c("apply", patch_file), error_on_status = FALSE)
+
+if (result$status == 0) {
+  message("\nPatch applied successfully!")
+} else {
+  message("\nFailed to apply patch:")
+  message(result$stderr)
+  message("\nYou can manually apply it with:")
+  message("  git apply ", patch_file)
+}
diff --git a/tools/wiley-cls-etex-fix.patch b/tools/wiley-cls-etex-fix.patch
new file mode 100644
index 000000000..e9e93416e
--- /dev/null
+++ b/tools/wiley-cls-etex-fix.patch
@@ -0,0 +1,20 @@
+diff --git a/inst/rmarkdown/templates/sim/skeleton/WileyNJD-v5.cls b/inst/rmarkdown/templates/sim/skeleton/WileyNJD-v5.cls
+index 70af769..3e61516 100644
+--- a/inst/rmarkdown/templates/sim/skeleton/WileyNJD-v5.cls
++++ b/inst/rmarkdown/templates/sim/skeleton/WileyNJD-v5.cls
+@@ -352,8 +352,13 @@
+ \ProcessOptions
+ \LoadClass[twoside,fleqn,onecolumn]{article}%
+ 
+-\usepackage{etex}%
+-\reserveinserts{28}% included etex package and \reserveinserts{...} to avoid no room for \newinserts, \newcounts or \newskips etc.
++\usepackage{etex}
++%\ Modification by as etex is not used anymore in modern LaTeX
++\makeatletter
++\@ifundefined{reserveinserts}{}{%
++  \reserveinserts{28}%
++}
++\makeatother
+ \RequirePackage{graphicx,multicol}%
+ \RequirePackage{multirow}%
+ \RequirePackage{cuted}%