diff --git a/.github/workflows/actions.lock b/.github/workflows/actions.lock
index 1a49056..70b0bf8 100644
--- a/.github/workflows/actions.lock
+++ b/.github/workflows/actions.lock
@@ -7,7 +7,7 @@ workflows:
         - 'actions/checkout@v7.0.1'
     '.github/workflows/c5-regenerate.yml':
         - 'actions/checkout@v7.0.1'
-        - 'ocaml/setup-ocaml@v3.9.0'
+        - 'ocaml/setup-ocaml@v3.9.1'
     '.github/workflows/cargo-audit.yml':
         - 'actions/checkout@v7.0.1'
     '.github/workflows/codeql.yml':
@@ -34,7 +34,7 @@ workflows:
         - 'actions/deploy-pages@v5.0.1'
         - 'actions/upload-pages-artifact@v5.0.0'
     '.github/workflows/push-email-notify.yml':
-        - 'hyperpolymath/smtp-notify-action@v0.5.0'
+        - 'hyperpolymath/smtp-notify-action@v0.5.1'
     '.github/workflows/release.yml':
         - 'actions/checkout@v7.0.1'
         - 'actions/upload-artifact@v7.0.2'
@@ -106,14 +106,14 @@ dependencies:
         commit: 'sha1-89f3c2702f4f650a92aa7411502f38da06abd562'
         owner_id: 6759885
         repo_id: 1275650185
-    'hyperpolymath/smtp-notify-action@v0.5.0':
-        ref: 'v0.5.0'
-        commit: 'sha1-c1c9fa07992a02c1fd3d67a0dc1b08cccb852aef'
+    'hyperpolymath/smtp-notify-action@v0.5.1':
+        ref: 'v0.5.1'
+        commit: 'sha1-e384daf6167a7a7567642d6a62060106244d2413'
         owner_id: 6759885
         repo_id: 1352485172
-    'ocaml/setup-ocaml@v3.9.0':
-        ref: 'v3.9.0'
-        commit: 'sha1-93303b622b2522e4411e295f9e77411a24912ac7'
+    'ocaml/setup-ocaml@v3.9.1':
+        ref: 'v3.9.1'
+        commit: 'sha1-ff66428f72b64472e749b22e0ad4dded4b2ddca6'
         owner_id: 1841483
         repo_id: 220799100
     'peter-evans/repository-dispatch@v4.0.1':
diff --git a/.github/workflows/c5-regenerate.yml b/.github/workflows/c5-regenerate.yml
index 2b1b44d..393a1f5 100644
--- a/.github/workflows/c5-regenerate.yml
+++ b/.github/workflows/c5-regenerate.yml
@@ -51,7 +51,7 @@ jobs:
           path: affinescript
 
       - name: Install OCaml
-        uses: ocaml/setup-ocaml@v3.9.0
+        uses: ocaml/setup-ocaml@v3.9.1
         with:
           ocaml-compiler: '4.14.2'
 
diff --git a/.github/workflows/push-email-notify.yml b/.github/workflows/push-email-notify.yml
index f4765e1..0fa55ed 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@v0.5.0
+        uses: hyperpolymath/smtp-notify-action@v0.5.1
         with:
           server_address: ${{ secrets.SMTP_HOST }}
           server_port: ${{ secrets.SMTP_PORT }}