diff --git a/.config/git/signing-key.sh b/.config/git/signing-key.sh
new file mode 100755
index 0000000..aed9246
--- /dev/null
+++ b/.config/git/signing-key.sh
@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+set -euo pipefail
+ssh-add -L | awk '/^sk-ssh/ { print "key::" $1 " " $2 }'
diff --git a/.gitconfig b/.gitconfig
index f6ad666..5bf2e93 100644
--- a/.gitconfig
+++ b/.gitconfig
@@ -10,7 +10,7 @@ compression = 3
 
 [user]
 useConfigOnly = true
-signingKey = key::sk-ssh-ed25519@openssh.com AAAAGnNrLXNzaC1lZDI1NTE5QG9wZW5zc2guY29tAAAAIFtd5SEEgKWzR6617GqxhSIi//4Afq7iRP0ny6fbwU7kAAAABHNzaDo=
+# signingKey = key::sk-ssh-ed25519@openssh.com AAAAGnNrLXNzaC1lZDI1NTE5QG9wZW5zc2guY29tAAAAIFtd5SEEgKWzR6617GqxhSIi//4Afq7iRP0ny6fbwU7kAAAABHNzaDo=
 
 [column]
 ui = auto
@@ -134,6 +134,7 @@ format = ssh
 
 [gpg "ssh"]
 allowedSignersFile = ~/.config/git/allowed_signers
+defaultKeyCommand = /home/dln/.config/git/signing-key.sh
 
 [user]
 name = Daniel Lundin