diff --git a/ChangeLog b/ChangeLog
index 5e4b03f9f1..dd5367a846 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+Thu May 17 07:21:44 2001  Akinori MUSHA  <knu@iDaemons.org>
+
+	* ext/Setup.dj, ext/Setup.emx, ext/Setup.nt, ext/Setup.x68:
+	compile sha1 in as well as md5.
+
+	* ext/Setup: put sha1 in a comment.
+
 Thu May 17 07:16:38 2001  Akinori MUSHA  <knu@iDaemons.org>
 
 	* ext/sha1/sha1.txt.jp: add the Japanese version derived from
diff --git a/ext/Setup b/ext/Setup
index 039747115f..29bc72240d 100644
--- a/ext/Setup
+++ b/ext/Setup
@@ -9,6 +9,7 @@
 #md5
 #pty
 #sdbm
+#sha1
 #socket
 #tk
 #tcltklib
diff --git a/ext/Setup.dj b/ext/Setup.dj
index 6c955cba1e..e61102a5b6 100644
--- a/ext/Setup.dj
+++ b/ext/Setup.dj
@@ -11,5 +11,6 @@ marshal
 md5
 readline
 sdbm
+sha1
 #socket
 #tkutil
diff --git a/ext/Setup.emx b/ext/Setup.emx
index dbb4b7a61c..1f83a95d21 100644
--- a/ext/Setup.emx
+++ b/ext/Setup.emx
@@ -11,6 +11,7 @@ nkf
 #pty
 #readline
 #sdbm
+sha1
 socket
 #tcltklib
 #tk
diff --git a/ext/Setup.nt b/ext/Setup.nt
index cd7969bb73..9aa72432d8 100644
--- a/ext/Setup.nt
+++ b/ext/Setup.nt
@@ -14,6 +14,7 @@ nkf
 #pty
 #readline
 sdbm
+sha1
 socket
 #tcltklib
 #tk
diff --git a/ext/Setup.x68 b/ext/Setup.x68
index 25adea2035..94d198b9f0 100644
--- a/ext/Setup.x68
+++ b/ext/Setup.x68
@@ -8,5 +8,6 @@ fcntl
 kconv
 marshal
 md5
+sha1
 #socket
 #tkutil