diff --git a/ssh/.ssh/config b/ssh/.ssh/config
index ff0c6d1..3c037f7 100644
--- a/ssh/.ssh/config
+++ b/ssh/.ssh/config
@@ -3,6 +3,8 @@ AddKeysToAgent yes
 
 Host github.com
     User git
+    IdentitiesOnly yes
+    IdentityFile ~/.ssh/id_ed25519_github
 
 Host tildegit.org
     User git