diff --git a/ChangeLog b/ChangeLog
index ed80acf4..597be659 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2009-12-06  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
+
+	Mentioned about pkg-config
+	* README
+
 2009-12-06  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
 
 	Fixed typo. Referred --index-out option in BitTorrent notes.
diff --git a/README b/README
index 78c94c15..6c6f0bc5 100644
--- a/README
+++ b/README
@@ -115,6 +115,8 @@ You can use libexpat1-dev instead of libxml2-dev:
 
 * libexpat1-dev    (Required for Metalink support)
 
+You may also need pkg-config to detect the above mentioned libraries.
+
 The quickest way to build aria2 is just type following commands:
 
 -------------
diff --git a/README.html b/README.html
index d0e9f7b2..30dc476b 100644
--- a/README.html
+++ b/README.html
@@ -872,6 +872,7 @@ libexpat1-dev    (Required for Metalink support)
 </p>
 </li>
 </ul></div>
+<div class="paragraph"><p>You may also need pkg-config to detect the above mentioned libraries.</p></div>
 <div class="paragraph"><p>The quickest way to build aria2 is just type following commands:</p></div>
 <div class="listingblock">
 <div class="content">
@@ -1025,7 +1026,7 @@ man aria2c
 <div id="footnotes"><hr /></div>
 <div id="footer">
 <div id="footer-text">
-Last updated 2009-12-06 17:43:01 JST
+Last updated 2009-12-06 17:57:59 JST
 </div>
 </div>
 </body>