diff --git a/devbook.xsl b/devbook.xsl
index c25c82c..ce91725 100644
--- a/devbook.xsl
+++ b/devbook.xsl
@@ -26,26 +26,38 @@
 
   <xsl:template match="section">
     <div class="section">
+      <xsl:variable name="parentanchor">
+        <xsl:call-template name="convert-to-anchor">
+          <xsl:with-param name="data"
+			  select="ancestor::chapter[last()]/title" />
+        </xsl:call-template>
+      </xsl:variable>
       <xsl:variable name="anchor">
         <xsl:call-template name="convert-to-anchor">
           <xsl:with-param name="data" select="title"/>
         </xsl:call-template>
       </xsl:variable>
 
-      <h2 id="{$anchor}"><xsl:apply-templates select="title"/></h2>
+      <h2 id="{concat($parentanchor,'-',$anchor)}"><xsl:apply-templates select="title"/></h2>
       <xsl:apply-templates select="(body|subsection)"/>
     </div>
   </xsl:template>
 
   <xsl:template match="subsection">
     <div class="section">
+      <xsl:variable name="parentanchor">
+        <xsl:call-template name="convert-to-anchor">
+          <xsl:with-param name="data"
+			  select="ancestor::section[last()]/title" />
+        </xsl:call-template>
+      </xsl:variable>
       <xsl:variable name="anchor">
         <xsl:call-template name="convert-to-anchor">
           <xsl:with-param name="data" select="title"/>
         </xsl:call-template>
       </xsl:variable>
 
-      <h3 id="{$anchor}"><xsl:apply-templates select="title"/></h3>
+      <h3 id="{concat($parentanchor,'-',$anchor)}"><xsl:apply-templates select="title"/></h3>
       <xsl:apply-templates select="(body|subsubsection)"/>
 
       <!-- If you need, change here to add more nesting levels -->
@@ -54,13 +66,19 @@
 
   <xsl:template match="subsubsection">
     <div class="section">
+      <xsl:variable name="parentanchor">
+        <xsl:call-template name="convert-to-anchor">
+          <xsl:with-param name="data"
+			  select="ancestor::subsection[last()]/title" />
+        </xsl:call-template>
+      </xsl:variable>
       <xsl:variable name="anchor">
         <xsl:call-template name="convert-to-anchor">
           <xsl:with-param name="data" select="title"/>
         </xsl:call-template>
       </xsl:variable>
 
-      <h4 id="{$anchor}"><xsl:apply-templates select="title"/></h4>
+      <h4 id="{concat($parentanchor,'-',$anchor)}"><xsl:apply-templates select="title"/></h4>
       <xsl:apply-templates select="(body)"/>
 
       <!-- If you need, change here to add more nesting levels -->