diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3a4dcac..b2192f3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 ## Unreleased
 
+- support for @startdef
 - bugfix
 
 ## 6.1.0-IJ2022.2 - 2023-05-15
diff --git a/gradle.properties b/gradle.properties
index 68b230f..23c1fc6 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -3,7 +3,7 @@ pluginGroup=com.github.esteinberg.plantuml4idea
 pluginName=plantuml4idea
 pluginRepositoryUrl=https://github.com/esteinberg/plantuml4idea
 # SemVer format -> https://semver.org
-pluginVersion=6.1.0-IJ2022.2
+pluginVersion=6.2.0-IJ2022.2
 # Supported build number ranges and IntelliJ Platform versions -> https://plugins.jetbrains.com/docs/intellij/build-number-ranges.html
 pluginSinceBuild=222.4167.9
 pluginUntilBuild=
diff --git a/src/main/java/org/plantuml/idea/lang/annotator/LanguageDescriptor.java b/src/main/java/org/plantuml/idea/lang/annotator/LanguageDescriptor.java
index ea4472b..0568758 100644
--- a/src/main/java/org/plantuml/idea/lang/annotator/LanguageDescriptor.java
+++ b/src/main/java/org/plantuml/idea/lang/annotator/LanguageDescriptor.java
@@ -16,7 +16,7 @@ public enum LanguageDescriptor {
 	public static final String IDEA_PARTIAL_RENDER = "idea.partialRender";
 	public static final String IDEA_DISABLE_SYNTAX_CHECK = "idea.disableSyntaxCheck";
 
-	public static final String TAGS = "uml|json|dot|jcckit|ditaa|salt|math|latex|mindmap|gantt|wbs|yaml|ebnf";
+	public static final String TAGS = "uml|json|dot|jcckit|ditaa|salt|math|latex|mindmap|gantt|wbs|yaml|ebnf|def";
 
 	public final List<String> types = Collections.unmodifiableList(Arrays.asList(
 			"actor",
@@ -77,7 +77,9 @@ public enum LanguageDescriptor {
 			"@endgantt",
 			"@endyaml",
 			"@endwbs",
-			"@endebnf"
+			"@endebnf",
+			"@startdef",
+			"@enddef"
 	));
 
 	public final List<String> keywords2 = Collections.unmodifiableList(Arrays.asList(