diff --git a/ChangeLog b/ChangeLog
index de3ac175..ca2b1fa6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2008-06-09  Tatsuhiro Tsujikawa  <tujikawa at rednoah dot com>
+
+	Included missing iosfwd or ostream header.
+	* src/RequestGroupMan.cc
+	* src/TaggedItem.cc
+	* src/TaggedItem.h
+	* src/Util.cc
+
 2008-06-08  Tatsuhiro Tsujikawa  <tujikawa at rednoah dot com>
 
 	* src/HttpHeaderProcessor.cc: Rewritten using std::string as a buffer.
diff --git a/src/RequestGroupMan.cc b/src/RequestGroupMan.cc
index e799f9d9..a8dd8e05 100644
--- a/src/RequestGroupMan.cc
+++ b/src/RequestGroupMan.cc
@@ -44,6 +44,7 @@
 #include "DownloadResult.h"
 #include <iomanip>
 #include <sstream>
+#include <ostream>
 #include <numeric>
 #include <algorithm>
 
diff --git a/src/TaggedItem.cc b/src/TaggedItem.cc
index d03ef146..2c769674 100644
--- a/src/TaggedItem.cc
+++ b/src/TaggedItem.cc
@@ -36,6 +36,7 @@
 #include "a2functional.h"
 #include "A2STR.h"
 #include <algorithm>
+#include <ostream>
 
 namespace aria2 {
 
diff --git a/src/TaggedItem.h b/src/TaggedItem.h
index 76dae619..36df1018 100644
--- a/src/TaggedItem.h
+++ b/src/TaggedItem.h
@@ -39,6 +39,7 @@
 #include "SharedHandle.h"
 #include <string>
 #include <deque>
+#include <iosfwd>
 
 namespace aria2 {
 
diff --git a/src/Util.cc b/src/Util.cc
index 5f8273a8..177db0cc 100644
--- a/src/Util.cc
+++ b/src/Util.cc
@@ -53,6 +53,7 @@
 #include <cstdlib>
 #include <iomanip>
 #include <sstream>
+#include <ostream>
 #include <algorithm>
 #ifndef HAVE_SLEEP
 # ifdef HAVE_WINSOCK_H