diff --git a/.github/workflows/00_anchore.yml b/.github/workflows/00_anchore.yml
index 802f626..d78192c 100644
--- a/.github/workflows/00_anchore.yml
+++ b/.github/workflows/00_anchore.yml
@@ -35,20 +35,20 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout the code
-        uses: actions/checkout@v3
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3
 
       - name: Build the Docker image
         run: docker build . --file ${{ env.DOCKERFILE }} --tag localbuild/testimage:latest
 
       - name: Run the Anchore scan action itself with GitHub Advanced Security code scanning integration enabled
-        uses: anchore/scan-action@v3
+        uses: anchore/scan-action@3343887d815d7b07465f6fdcd395bd66508d486a # v3
         with:
           image: "localbuild/testimage:latest"
           acs-report-enable: true
           fail-build: true
           severity-cutoff: "high"
       - name: Upload Anchore Scan Report
-        uses: github/codeql-action/upload-sarif@v2
+        uses: github/codeql-action/upload-sarif@d958b976dc5b990f802df244f2dc5d807113327f # v2
         if: always()
         with:
           sarif_file: results.sarif
diff --git a/.github/workflows/01_add_patch_label.yml b/.github/workflows/01_add_patch_label.yml
index 00e0fc5..c0002b9 100644
--- a/.github/workflows/01_add_patch_label.yml
+++ b/.github/workflows/01_add_patch_label.yml
@@ -19,7 +19,7 @@ jobs:
     steps:
       - name: Check user labels
         id: check_user_labels
-        uses: actions/github-script@v6.3.3
+        uses: actions/github-script@d556feaca394842dc55e4734bf3bb9f685482fa0 # v6.3.3
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           script: |
@@ -48,7 +48,7 @@ jobs:
 
       - name: Add comment
         if: ${{ steps.check_user_labels.outputs.result == 'true' }}
-        uses: actions/github-script@v6.3.3
+        uses: actions/github-script@d556feaca394842dc55e4734bf3bb9f685482fa0 # v6.3.3
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           script: |
diff --git a/.github/workflows/01_assignee.yml b/.github/workflows/01_assignee.yml
index 0611917..cf22668 100644
--- a/.github/workflows/01_assignee.yml
+++ b/.github/workflows/01_assignee.yml
@@ -21,6 +21,6 @@ jobs:
     steps:
       - name: Assign Me
         # You may pin to the exact commit or the version.
-        uses: kentaro-m/auto-assign-action@v1.2.1
+        uses: kentaro-m/auto-assign-action@746a3a558fdd0e061f612ec9f8ff1b8a19c1a115 # v1.2.1
         with:
           configuration-path: '.github/auto_assign.yml'
diff --git a/.github/workflows/02_check_pr.yml b/.github/workflows/02_check_pr.yml
index 8dc9b00..407d3e5 100644
--- a/.github/workflows/02_check_pr.yml
+++ b/.github/workflows/02_check_pr.yml
@@ -24,7 +24,7 @@ jobs:
     steps:
       - name: Assign Me
         # You may pin to the exact commit or the version.
-        uses: kentaro-m/auto-assign-action@v1.2.1
+        uses: kentaro-m/auto-assign-action@746a3a558fdd0e061f612ec9f8ff1b8a19c1a115 # v1.2.1
         with:
           configuration-path: '.github/auto_assign.yml'
 
@@ -37,7 +37,7 @@ jobs:
     steps:
       - name: Verify PR Labels
         if: ${{ !contains(github.event.pull_request.labels.*.name, 'patch') && !contains(github.event.pull_request.labels.*.name, 'ignore-for-release') }}
-        uses: actions/github-script@v6.3.3
+        uses: actions/github-script@d556feaca394842dc55e4734bf3bb9f685482fa0 # v6.3.3
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           script: |
@@ -70,7 +70,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3
       - name: Formatting
         id: format
         continue-on-error: true
@@ -78,7 +78,7 @@ jobs:
         with:
           args: "--set-exit-if-changed"
 
-      - uses: actions/github-script@v6.3.3
+      - uses: actions/github-script@d556feaca394842dc55e4734bf3bb9f685482fa0 # v6.3.3
         if: steps.format.outcome != 'success'
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/02_update_code.yml b/.github/workflows/02_update_code.yml
index ed41d83..8b42a43 100644
--- a/.github/workflows/02_update_code.yml
+++ b/.github/workflows/02_update_code.yml
@@ -17,7 +17,7 @@ jobs:
     if: ${{ contains(github.event.comment.body, 'update_code') }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3
         with:
           token: ${{ secrets.BOT_TOKEN_GITHUB }}
 
@@ -26,7 +26,7 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       - name: Set up JDK 11
-        uses: actions/setup-java@v1
+        uses: actions/setup-java@b6e674f4b717d7b0ae3baee0fbe79f498905dfde # v1
         with:
           java-version: 11
 
@@ -58,7 +58,7 @@ jobs:
     if: ${{ always() && contains(needs.*.result, 'failure') }}
     steps:
       - name: Notify if Failure
-        uses: actions/github-script@v6.3.3
+        uses: actions/github-script@d556feaca394842dc55e4734bf3bb9f685482fa0 # v6.3.3
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           script: |
diff --git a/.github/workflows/03_code_review.yml b/.github/workflows/03_code_review.yml
index 1e45e4c..03caf8d 100644
--- a/.github/workflows/03_code_review.yml
+++ b/.github/workflows/03_code_review.yml
@@ -35,7 +35,7 @@ jobs:
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
       - name: Code Review
-        uses: pagopa/github-actions-template/maven-code-review@v1.8.3
+        uses: pagopa/github-actions-template/maven-code-review@de4ca1ddefb1461c176cc42259e494158b578fe3 # v1.8.3
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           sonar_token: ${{ secrets.SONAR_TOKEN }}
diff --git a/.github/workflows/05_release_deploy.yml b/.github/workflows/05_release_deploy.yml
index 42776c5..6607826 100644
--- a/.github/workflows/05_release_deploy.yml
+++ b/.github/workflows/05_release_deploy.yml
@@ -81,7 +81,7 @@ jobs:
     steps:
       - name: Make Release
         id: release
-        uses: pagopa/github-actions-template/maven-release@v1.5.4
+        uses: pagopa/github-actions-template/maven-release@d91a1fd0b913c9830589be5d86cdb71c90813fae # v1.5.4
         with:
           semver: ${{ needs.setup.outputs.semver }}
           github_token: ${{ secrets.BOT_TOKEN_GITHUB }}
@@ -102,12 +102,12 @@ jobs:
 #          github_token: ${{ secrets.GITHUB_TOKEN }}
 #          tag: ${{ needs.release.outputs.version }}
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3
         with:
           ref: ${{ github.ref_name }}
 
       - name: Login to GitHub Container Registry
-        uses: docker/login-action@v2
+        uses: docker/login-action@465a07811f14bebb1938fbed4728c6a1ff8901fc # v2
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
@@ -115,7 +115,7 @@ jobs:
 
       - name: Docker meta
         id: meta
-        uses: docker/metadata-action@v4.3.0
+        uses: docker/metadata-action@507c2f2dc502c992ad446e3d7a5dfbe311567a96 # v4.3.0
         with:
           images: ghcr.io/${{ github.repository }}
           tags: |
@@ -125,7 +125,7 @@ jobs:
             type=sha
 
       - name: Build and push
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@0a97817b6ade9f46837855d676c4cca3a2471fc9 # v4
         with:
           context: .
           push: true
@@ -155,7 +155,7 @@ jobs:
     steps:
       - name: Report Status
         if: always()
-        uses: ravsamhq/notify-slack-action@v2
+        uses: ravsamhq/notify-slack-action@be814b201e233b2dc673608aa46e5447c8ab13f2 # v2
         with:
           status: ${{ needs.deploy_aks.result }}
           token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/docker/local-dbs/docker-compose.yml b/docker/local-dbs/docker-compose.yml
index 8212c25..8b87081 100644
--- a/docker/local-dbs/docker-compose.yml
+++ b/docker/local-dbs/docker-compose.yml
@@ -1,7 +1,7 @@
 version: '3.9'
 services:
   postgres:
-    image: postgres:14
+    image: postgres:14@sha256:21aa11444107c0261e6f8b74aec275179212d4f542388d25630fb8c3da8bdb94
     container_name: postgres_nexi
     ports:
       - 5432:5432
diff --git a/performance-test/docker-compose.yaml b/performance-test/docker-compose.yaml
index e9205ff..1425292 100644
--- a/performance-test/docker-compose.yaml
+++ b/performance-test/docker-compose.yaml
@@ -1,7 +1,7 @@
 version: '3.3'
 services:
   k6:
-    image: grafana/k6
+    image: grafana/k6@sha256:c70aaeaa1d9e4758ba5f292b1a0c73269fd949669c0d1042b2b1e18c58f07b82
     container_name: k6
     volumes:
       - '${PWD}/src:/scripts'
@@ -15,7 +15,7 @@ services:
       - nginx
 
   nginx:
-    image: nginx
+    image: nginx@sha256:67682bda769fae1ccf5183192b8daf37b64cae99c6c3302650f6f8bf5f0f95df
     container_name: nginx
     volumes:
       - '${PWD}/nginx/nginx.conf:/etc/nginx/nginx.conf'