diff --git a/bin/vault-sshadd b/bin/vault-sshadd
index 8e1732c..7b78778 100755
--- a/bin/vault-sshadd
+++ b/bin/vault-sshadd
@@ -35,7 +35,7 @@ trap "rm ${HELPER}" EXIT
 
 cat -s <<EOF > ${HELPER}
 #!/bin/bash
-vault read -field=private "/secret/ssh-key/\$1" | exec ssh-add -
+vault read -field=private "/secret/ssh-key/\$1" | exec ssh-add -t 900 -
 EOF
 
 for KEY_NAME in $@; do