diff --git a/charts/base-cluster/templates/flux/_create-authentication-key-secret-job.yaml b/charts/base-cluster/templates/flux/_create-authentication-key-secret-job.yaml
index f3c11aad9..9e9e90d33 100644
--- a/charts/base-cluster/templates/flux/_create-authentication-key-secret-job.yaml
+++ b/charts/base-cluster/templates/flux/_create-authentication-key-secret-job.yaml
@@ -46,7 +46,7 @@ spec:
             - -c
             - |-
               set -o pipefail
-              flux create secret git --namespace {{ .context.Release.Namespace }} --url {{ .url | quote }} {{ .secretName | quote }} --export \
+              flux create secret git --ssh-key-algorithm ed25519 --namespace {{ .context.Release.Namespace }} --url {{ .url | quote }} {{ .secretName | quote }} --export \
                 | kubectl --namespace {{ .context.Release.Namespace }} create -f -
     {{- else if eq .type "gpg" }}
       initContainers: