diff --git a/charts/matrix-synapse/Chart.yaml b/charts/matrix-synapse/Chart.yaml
index 8c0d086..9ff6dd4 100644
--- a/charts/matrix-synapse/Chart.yaml
+++ b/charts/matrix-synapse/Chart.yaml
@@ -6,7 +6,7 @@ icon: https://matrix.org/images/matrix-logo.svg
 appVersion: 1.55.0
 
 type: application
-version: 2.1.30
+version: 2.1.31
 maintainers:
   - name: Alexander Olofsson
     email: ace@haxalot.com
diff --git a/charts/matrix-synapse/templates/signing-key-job.yaml b/charts/matrix-synapse/templates/signing-key-job.yaml
index b5d421e..ac40345 100644
--- a/charts/matrix-synapse/templates/signing-key-job.yaml
+++ b/charts/matrix-synapse/templates/signing-key-job.yaml
@@ -69,7 +69,11 @@ spec:
             - -c
             - |
               echo "Generating signing key..."
-              generate_signing_key.py -o /synapse/keys/signing.key
+              if which generate_signing_key.py >/dev/null; then
+                generate_signing_key.py -o /synapse/keys/signing.key
+              else
+                generate_signing_key -o /synapse/keys/signing.key
+              fi
           image: "{{ .Values.signingkey.job.generateImage.repository }}:{{ default .Values.signingkey.job.generateImage.tag "latest" }}"
           imagePullPolicy: {{ .Values.signingkey.job.generateImage.pullPolicy }}
           name: signing-key-generate