diff --git a/.github/workflows/proto.yml b/.github/workflows/proto.yml
index 013ea9e..dd95ac5 100644
--- a/.github/workflows/proto.yml
+++ b/.github/workflows/proto.yml
@@ -83,7 +83,7 @@ jobs:
       # setup action — install a pinned buf on PATH — so the explicit `buf`
       # invocations below stay readable and match the Makefile targets.
       - name: Set up buf
-        uses: bufbuild/buf-action@8c6a16e16f12ba20b6470afa9c2ba9b5ba8c97c3 # v1.5.0
+        uses: bufbuild/buf-action@85aebf73123b5c15fd5528aaecbf9129cddf7fa7 # v1.6.0
         with:
           version: ${{ env.BUF_VERSION }}
           setup_only: true
@@ -110,7 +110,7 @@ jobs:
           fetch-depth: 0
 
       - name: Set up buf
-        uses: bufbuild/buf-action@8c6a16e16f12ba20b6470afa9c2ba9b5ba8c97c3 # v1.5.0
+        uses: bufbuild/buf-action@85aebf73123b5c15fd5528aaecbf9129cddf7fa7 # v1.6.0
         with:
           version: ${{ env.BUF_VERSION }}
           setup_only: true
diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
index e014d4f..105c9bc 100644
--- a/.github/workflows/security.yml
+++ b/.github/workflows/security.yml
@@ -211,7 +211,7 @@ jobs:
       # Buildx gives us the modern BuildKit builder (cache mounts in the
       # Dockerfile, multi-stage, provenance) used by build-push-action.
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@bb05f3f5519dd87d3ba754cc423b652a5edd6d2c # v4.2.0
+        uses: docker/setup-buildx-action@f87e5991a6d7451dcb8d9637bfbc97413f497069 # v4.4.1
 
       # Derive tags/labels from git context. On a PR we build but do NOT push
       # (no login below); on push/tag we push and sign. metadata-action emits a
@@ -232,7 +232,7 @@ jobs:
       # keeps PR runs read-only and avoids a useless auth attempt.
       - name: Log in to GHCR
         if: github.event_name == 'push'
-        uses: docker/login-action@abd2ef45e78c5afb21d64d4ca52ee8550d9572c7 # v4.5.1
+        uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4.6.0
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
@@ -249,7 +249,7 @@ jobs:
       #     so the signature is immutable even if the tag is later re-pointed).
       - name: Build image
         id: build
-        uses: docker/build-push-action@53b7df96c91f9c12dcc8a07bcb9ccacbed38856a # v7.3.0
+        uses: docker/build-push-action@c3c9e263c25d99ce0380d002d59b67737d91b0dc # v7.4.0
         with:
           context: .
           file: services/${{ matrix.service }}/Dockerfile
@@ -301,7 +301,7 @@ jobs:
       # Syft; CycloneDX is the format policy engines + `cosign attest` consume.
       # Uploaded as an artifact (and as a release asset on a tag).
       - name: Generate CycloneDX SBOM (Syft)
-        uses: anchore/sbom-action@e22c389904149dbc22b58101806040fa8d37a610 # v0.24.0
+        uses: anchore/sbom-action@3ad7283483fc7af8ff2b4ea19663c2d5ca935e26 # v0.24.2
         with:
           image: ${{ steps.target.outputs.image }}
           format: cyclonedx-json