diff --git a/RELEASENOTES.adoc b/RELEASENOTES.adoc
index e6404d02..9c4b6286 100644
--- a/RELEASENOTES.adoc
+++ b/RELEASENOTES.adoc
@@ -13,4 +13,7 @@
 * Removed commons.io from compile dependency
 
 === Version 0.1.4
-* Fixed SECTION_TITLE_LEVEL3 in Markdown enum
\ No newline at end of file
+* Fixed SECTION_TITLE_LEVEL3 in Markdown enum
+
+=== Version 0.1.5
+* Added SECTION_TITLE_LEVEL4
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index b4fbd128..be3de571 100644
--- a/build.gradle
+++ b/build.gradle
@@ -13,7 +13,7 @@ buildscript {
     }
 }
 description = 'A Markup (Markdown, AsciiDoc) document builder'
-version = '0.1.3'
+version = '0.1.5'
 group = 'io.github.robwin'
 
 apply plugin: 'java'
diff --git a/src/main/java/io/github/robwin/markup/builder/AbstractMarkupDocBuilder.java b/src/main/java/io/github/robwin/markup/builder/AbstractMarkupDocBuilder.java
index 7b8ef7ac..36622cd1 100644
--- a/src/main/java/io/github/robwin/markup/builder/AbstractMarkupDocBuilder.java
+++ b/src/main/java/io/github/robwin/markup/builder/AbstractMarkupDocBuilder.java
@@ -57,6 +57,10 @@ public abstract class AbstractMarkupDocBuilder implements MarkupDocBuilder {
         documentBuilder.append(markup).append(title).append(newLine);
     }
 
+    protected void sectionTitleLevel4(Markup markup, String title){
+        documentBuilder.append(markup).append(title).append(newLine);
+    }
+
     @Override
     public MarkupDocBuilder textLine(String text){
         documentBuilder.append(text).append(newLine);
diff --git a/src/main/java/io/github/robwin/markup/builder/MarkupDocBuilder.java b/src/main/java/io/github/robwin/markup/builder/MarkupDocBuilder.java
index 63ebefff..e3d7772a 100644
--- a/src/main/java/io/github/robwin/markup/builder/MarkupDocBuilder.java
+++ b/src/main/java/io/github/robwin/markup/builder/MarkupDocBuilder.java
@@ -36,6 +36,8 @@ public interface MarkupDocBuilder {
 
     MarkupDocBuilder sectionTitleLevel3(String title);
 
+    MarkupDocBuilder sectionTitleLevel4(String title);
+
     MarkupDocBuilder textLine(String text);
 
     MarkupDocBuilder paragraph(String text);
diff --git a/src/main/java/io/github/robwin/markup/builder/MarkupDocBuilders.java b/src/main/java/io/github/robwin/markup/builder/MarkupDocBuilders.java
index 9bbec144..d6739684 100644
--- a/src/main/java/io/github/robwin/markup/builder/MarkupDocBuilders.java
+++ b/src/main/java/io/github/robwin/markup/builder/MarkupDocBuilders.java
@@ -27,7 +27,7 @@ import io.github.robwin.markup.builder.markdown.MarkdownBuilder;
  */
 public final class MarkupDocBuilders {
 
-    private MarkupDocBuilders(){};
+    private MarkupDocBuilders(){}
 
     public static MarkupDocBuilder documentBuilder(MarkupLanguage markupLanguage){
         switch(markupLanguage){
diff --git a/src/main/java/io/github/robwin/markup/builder/asciidoc/AsciiDoc.java b/src/main/java/io/github/robwin/markup/builder/asciidoc/AsciiDoc.java
index c7cecd96..0faa9537 100644
--- a/src/main/java/io/github/robwin/markup/builder/asciidoc/AsciiDoc.java
+++ b/src/main/java/io/github/robwin/markup/builder/asciidoc/AsciiDoc.java
@@ -34,6 +34,7 @@ public enum AsciiDoc implements Markup {
     SECTION_TITLE_LEVEL1("== "),
     SECTION_TITLE_LEVEL2("=== "),
     SECTION_TITLE_LEVEL3("==== "),
+    SECTION_TITLE_LEVEL4("===== "),
     BOLD("*"),
     ITALIC("_"),
     LIST_ENTRY("* "),
diff --git a/src/main/java/io/github/robwin/markup/builder/asciidoc/AsciiDocBuilder.java b/src/main/java/io/github/robwin/markup/builder/asciidoc/AsciiDocBuilder.java
index 51a64abc..f9311ffc 100644
--- a/src/main/java/io/github/robwin/markup/builder/asciidoc/AsciiDocBuilder.java
+++ b/src/main/java/io/github/robwin/markup/builder/asciidoc/AsciiDocBuilder.java
@@ -60,6 +60,12 @@ public class AsciiDocBuilder extends AbstractMarkupDocBuilder {
         return this;
     }
 
+    @Override
+    public MarkupDocBuilder sectionTitleLevel4(String title){
+        sectionTitleLevel3(AsciiDoc.SECTION_TITLE_LEVEL4, title);
+        return this;
+    }
+
     @Override
     public MarkupDocBuilder paragraph(String text){
         paragraph(AsciiDoc.HARDBREAKS, text);
diff --git a/src/main/java/io/github/robwin/markup/builder/markdown/Markdown.java b/src/main/java/io/github/robwin/markup/builder/markdown/Markdown.java
index 00239be6..f980150c 100644
--- a/src/main/java/io/github/robwin/markup/builder/markdown/Markdown.java
+++ b/src/main/java/io/github/robwin/markup/builder/markdown/Markdown.java
@@ -32,6 +32,7 @@ public enum Markdown implements Markup {
     SECTION_TITLE_LEVEL1("## "),
     SECTION_TITLE_LEVEL2("### "),
     SECTION_TITLE_LEVEL3("#### "),
+    SECTION_TITLE_LEVEL4("##### "),
     BOLD("**"),
     ITALIC("*"),
     LIST_ENTRY("* ");
diff --git a/src/main/java/io/github/robwin/markup/builder/markdown/MarkdownBuilder.java b/src/main/java/io/github/robwin/markup/builder/markdown/MarkdownBuilder.java
index 18501020..904e9c54 100644
--- a/src/main/java/io/github/robwin/markup/builder/markdown/MarkdownBuilder.java
+++ b/src/main/java/io/github/robwin/markup/builder/markdown/MarkdownBuilder.java
@@ -61,6 +61,12 @@ public class MarkdownBuilder extends AbstractMarkupDocBuilder
         return this;
     }
 
+    @Override
+    public MarkupDocBuilder sectionTitleLevel4(String title){
+        sectionTitleLevel3(Markdown.SECTION_TITLE_LEVEL4, title);
+        return this;
+    }
+
     @Override
     public MarkupDocBuilder paragraph(String text){
         paragraph(Markdown.HARDBREAKS, text);