PDFBOX-5303: added minimum java version
diff --git a/content/download.html b/content/download.html
index 272427a..53bd8c5 100644
--- a/content/download.html
+++ b/content/download.html
@@ -27,10 +27,10 @@
 <p>The Apache PDFBox community provides feature and bugfix releases.</p>
 
 <ul>
-    <li>Alpha release for PDFBox 3.0.0 &mdash; <a href="https://www.apache.org/dist/pdfbox/3.0.0-alpha3/RELEASE-NOTES.txt">3.0.0-alpha3</a></li>
-    <li>Feature release for PDFBox 2.0.x &mdash; <a href="https://www.apache.org/dist/pdfbox/2.0.27/RELEASE-NOTES.txt">2.0.27</a></li>
-    <li>Bugfix release for PDFBox 1.8.x &mdash; <a href="https://www.apache.org/dist/pdfbox/1.8.17/RELEASE-NOTES.txt">1.8.17</a></li>
-    <li>Feature release of JBIG2 ImageIO plugin 3.0.x &mdash; <a href="https://www.apache.org/dist/pdfbox/jbig2-imageio/3.0.4/RELEASE-NOTES.txt">3.0.4</a></li>
+    <li>Alpha release for PDFBox 3.0.0 &mdash; <a href="https://www.apache.org/dist/pdfbox/3.0.0-alpha3/RELEASE-NOTES.txt">3.0.0-alpha3</a> (requires Java 8)</li>
+    <li>Feature release for PDFBox 2.0.x &mdash; <a href="https://www.apache.org/dist/pdfbox/2.0.27/RELEASE-NOTES.txt">2.0.27</a> (requires Java 6)</li>
+    <li>Bugfix release for PDFBox 1.8.x &mdash; <a href="https://www.apache.org/dist/pdfbox/1.8.17/RELEASE-NOTES.txt">1.8.17</a> (requires Java 5)</li>
+    <li>Feature release of JBIG2 ImageIO plugin 3.0.x &mdash; <a href="https://www.apache.org/dist/pdfbox/jbig2-imageio/3.0.4/RELEASE-NOTES.txt">3.0.4</a> (requires Java 6)</li>
     <li><a href="#oldreleases">Previous releases</a></li>
 </ul>