Index: openssh-8.9p1/myproposal.h
===================================================================
--- openssh-8.9p1.orig/myproposal.h
+++ openssh-8.9p1/myproposal.h
@@ -34,7 +34,8 @@
 	"diffie-hellman-group-exchange-sha256," \
 	"diffie-hellman-group16-sha512," \
 	"diffie-hellman-group18-sha512," \
-	"diffie-hellman-group14-sha256"
+	"diffie-hellman-group14-sha256," \
+	"diffie-hellman-group14-sha1"
 
 #define KEX_CLIENT_KEX KEX_SERVER_KEX
 
Index: openssh-8.9p1/ssh_config.5
===================================================================
--- openssh-8.9p1.orig/ssh_config.5
+++ openssh-8.9p1/ssh_config.5
@@ -1228,7 +1228,8 @@ sntrup761x25519-sha512@openssh.com,
 diffie-hellman-group-exchange-sha256,
 diffie-hellman-group16-sha512,
 diffie-hellman-group18-sha512,
-diffie-hellman-group14-sha256
+diffie-hellman-group14-sha256,
+diffie-hellman-group14-sha1
 .Ed
 .Pp
 The list of supported key exchange algorithms may also be obtained using
Index: openssh-8.9p1/sshd_config.5
===================================================================
--- openssh-8.9p1.orig/sshd_config.5
+++ openssh-8.9p1/sshd_config.5
@@ -996,7 +996,7 @@ ecdh-sha2-nistp256,ecdh-sha2-nistp384,ec
 ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,
 diffie-hellman-group-exchange-sha256,
 diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,
-diffie-hellman-group14-sha256
+diffie-hellman-group14-sha256,diffie-hellman-group14-sha1
 .Ed
 .Pp
 The list of supported key exchange algorithms may also be obtained using