diff --git a/.github/workflows/actions.lock b/.github/workflows/actions.lock
index 184e05a..d46e3d2 100644
--- a/.github/workflows/actions.lock
+++ b/.github/workflows/actions.lock
@@ -24,7 +24,7 @@ workflows:
         - 'actions/deploy-pages@368f82528645a54fb793d4d04e342629a3f51346'
         - 'actions/upload-pages-artifact@fc324d3547104276b827a68afc52ff2a11cc49c9'
     '.github/workflows/push-email-notify.yml':
-        - 'hyperpolymath/smtp-notify-action@22e7bdb322c430c1d0dac6b3bb307f4bb139d0be'
+        - 'hyperpolymath/smtp-notify-action@e384daf6167a7a7567642d6a62060106244d2413'
     '.github/workflows/workflow-linter.yml':
         - 'actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1'
 dependencies:
@@ -70,9 +70,9 @@ dependencies:
         commit: 'sha1-0f8e8c99d88aeb3fbfd523f1ef2c6f762d10d64d'
         owner_id: 75048950
         repo_id: 623796603
-    'hyperpolymath/smtp-notify-action@22e7bdb322c430c1d0dac6b3bb307f4bb139d0be':
-        ref: 'v0.3.0'
-        commit: 'sha1-22e7bdb322c430c1d0dac6b3bb307f4bb139d0be'
+    'hyperpolymath/smtp-notify-action@e384daf6167a7a7567642d6a62060106244d2413':
+        ref: 'v0.5.1'
+        commit: 'sha1-e384daf6167a7a7567642d6a62060106244d2413'
         owner_id: 6759885
         repo_id: 1352485172
     'peter-evans/repository-dispatch@28959ce8df70de7be546dd1250a005dd32156697':
diff --git a/.github/workflows/push-email-notify.yml b/.github/workflows/push-email-notify.yml
index 838e219..d5cd2a9 100644
--- a/.github/workflows/push-email-notify.yml
+++ b/.github/workflows/push-email-notify.yml
@@ -40,7 +40,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: Send push notification email
-        uses: hyperpolymath/smtp-notify-action@c1c9fa07992a02c1fd3d67a0dc1b08cccb852aef # v0.5.0
+        uses: hyperpolymath/smtp-notify-action@e384daf6167a7a7567642d6a62060106244d2413 # v0.5.1
         with:
           server_address: ${{ secrets.SMTP_HOST }}
           server_port: ${{ secrets.SMTP_PORT }}