diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 29116cf..3699100 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -28,6 +28,6 @@ jobs:
       - uses: julia-actions/setup-julia@fa02766e078afaaf09b14210362cee14137e6a32 # v3.0.2
         with:
           version: ${{ matrix.julia-version }}
-      - uses: julia-actions/cache@a7bed9df697e5d7309d68afe7542a87621a8b6c8 # v2
+      - uses: julia-actions/cache@e32267b41e0fa7df82a3d53e8c7273620d52c586 # v2
       - name: Install, build, test
         run: julia --project=. -e 'using Pkg; Pkg.instantiate(); Pkg.build(); Pkg.test()'
diff --git a/.github/workflows/mirror.yml b/.github/workflows/mirror.yml
index 0af42f4..a8cea43 100644
--- a/.github/workflows/mirror.yml
+++ b/.github/workflows/mirror.yml
@@ -112,7 +112,7 @@ jobs:
         with:
           fetch-depth: 0
       - name: Setup Rust
-        uses: dtolnay/rust-toolchain@02cb101ec7c40f2c49e1d9714d64511d8e1b74de # stable
+        uses: dtolnay/rust-toolchain@7e38f4b43b4db5c8dd498af069a4f6196df1d067 # stable
         with:
           toolchain: stable
       - name: Install Radicle
diff --git a/.github/workflows/push-email-notify.yml b/.github/workflows/push-email-notify.yml
index 7946625..1d4d92f 100644
--- a/.github/workflows/push-email-notify.yml
+++ b/.github/workflows/push-email-notify.yml
@@ -39,7 +39,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: Send push notification email
-        uses: hyperpolymath/smtp-notify-action@22e7bdb322c430c1d0dac6b3bb307f4bb139d0be # v0.3.0
+        uses: hyperpolymath/smtp-notify-action@c1c9fa07992a02c1fd3d67a0dc1b08cccb852aef # v0.5.0
         with:
           server_address: ${{ secrets.SMTP_HOST }}
           server_port: ${{ secrets.SMTP_PORT }}