diff --git a/.tangled/workflows/mirror.yml b/.tangled/workflows/mirror.yml
index 7c62656..61a31fc 100644
--- a/.tangled/workflows/mirror.yml
+++ b/.tangled/workflows/mirror.yml
@@ -31,13 +31,13 @@ steps:
       chmod 0700 /tangled/home/.ssh
       echo "$GITHUB_DEPLOY_KEY" > /tangled/home/.ssh/github_deploy_key
       chmod 0600 /tangled/home/.ssh/github_deploy_key
-      echo "$GITHUB_KNOWN_HOSTS" > /tangled/home/.ssh/github_known_hosts
+      echo "$GITHUB_KNOWN_HOSTS" >> /tangled/home/.ssh/known_hosts
       chmod 0600 /tangled/home/.ssh/github_known_hosts
       echo > /tangled/home/.ssh/config << EOF
       Host github.com
         LogLevel DEBUG
+        IdentitiesOnly yes
         IdentityFile /tangled/home/.ssh/github_deploy_key
-        UserKnownHostsFile /tangled/home/.ssh/github_known_hosts
       EOF
       chmod 0600 /tangled/home/ssh/config
       git config --global core.sshCommand "ssh -v"