diff --git a/CHANGELOG.adoc b/CHANGELOG.adoc
index 3a80bb51f..0469fc231 100644
--- a/CHANGELOG.adoc
+++ b/CHANGELOG.adoc
@@ -10,6 +10,7 @@ This document provides a high-level view of the changes introduced by release.
 === 0.43.5
 
 - Update docs and templates to recommend an absolute path for the `pdf-themesdir` (#1750)
+- When rendering the preview for Antora, automatically switch to highlight.js syntax highlighting (#1736)
 
 === 0.43.4
 
diff --git a/src/main/java/org/asciidoc/intellij/AsciiDocWrapper.java b/src/main/java/org/asciidoc/intellij/AsciiDocWrapper.java
index 441f821a8..a4f6681df 100644
--- a/src/main/java/org/asciidoc/intellij/AsciiDocWrapper.java
+++ b/src/main/java/org/asciidoc/intellij/AsciiDocWrapper.java
@@ -1051,6 +1051,9 @@ public static Collection<AttributeDeclaration> populateAntoraAttributes(@NotNull
     antoraModuleDir) {
     Collection<AttributeDeclaration> result = new ArrayList<>();
     if (antoraModuleDir != null) {
+      // Antora uses hightlight.js as the default. Making it soft-set so it can be overwritten when needed
+      result.add(new AsciiDocAttributeDeclarationDummy("source-highlighter", "highlight.js", true));
+
       result.addAll(collectAntoraAttributes(antoraModuleDir, project));
 
       VirtualFile baseDir = LocalFileSystem.getInstance().findFileByIoFile(fileBaseDir);