diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 8df9de057..cf1a0e089 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -34,3 +34,8 @@ updates:
     open-pull-requests-limit: 1
     labels:
       - "dependencies"
+
+  - package-ecosystem: docker
+    directory: /
+    schedule:
+      interval: daily
diff --git a/.github/workflows/EVENT_merge_to_master.yml b/.github/workflows/EVENT_merge_to_master.yml
index 4841f8fbd..a3215c494 100644
--- a/.github/workflows/EVENT_merge_to_master.yml
+++ b/.github/workflows/EVENT_merge_to_master.yml
@@ -39,8 +39,13 @@ jobs:
     name: Success
     runs-on: ubuntu-latest
     steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@5c7944e73c4c2a096b17a9cb74d65b6c2bbafbde # v2.9.1
+        with:
+          egress-policy: audit
+
       - name: Set branch status to success
-        uses: actions/github-script@v3
+        uses: actions/github-script@ffc2c79a5b2490bd33e0a41c1de74b877714d736 # v3.2.0
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           script: |
diff --git a/.github/workflows/EVENT_release.yml b/.github/workflows/EVENT_release.yml
index 19c1e163f..a43ddc407 100644
--- a/.github/workflows/EVENT_release.yml
+++ b/.github/workflows/EVENT_release.yml
@@ -32,7 +32,17 @@ jobs:
   validate_tag:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - name: Harden Runner
+        uses: step-security/harden-runner@5c7944e73c4c2a096b17a9cb74d65b6c2bbafbde # v2.9.1
+        with:
+          egress-policy: audit
+
+      - name: Harden Runner
+        uses: step-security/harden-runner@5c7944e73c4c2a096b17a9cb74d65b6c2bbafbde # v2.9.1
+        with:
+          egress-policy: audit
+
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
         with:
           ref: ${{ github.ref }}
 
@@ -61,12 +71,12 @@ jobs:
     permissions:
       id-token: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
         with:
           ref: ${{ github.ref }}
 
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@39cd14951b08e74b54015e9e001cdefcf80e669f # v5.1.1
         with:
           python-version: "3.9"
 
@@ -89,12 +99,17 @@ jobs:
     permissions:
       id-token: write
     steps:
-      - uses: actions/checkout@v4
+      - name: Harden Runner
+        uses: step-security/harden-runner@5c7944e73c4c2a096b17a9cb74d65b6c2bbafbde # v2.9.1
+        with:
+          egress-policy: audit
+
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
         with:
           ref: ${{ github.ref }}
 
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@39cd14951b08e74b54015e9e001cdefcf80e669f # v5.1.1
         with:
           python-version: "3.9"
       - run: pip install pip --upgrade
diff --git a/.github/workflows/EVENT_tag.yml b/.github/workflows/EVENT_tag.yml
index 40c03092c..db2366f4a 100644
--- a/.github/workflows/EVENT_tag.yml
+++ b/.github/workflows/EVENT_tag.yml
@@ -14,18 +14,26 @@ concurrency:
 env:
   GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
+permissions:
+  contents: read
+
 jobs:
   create_release:
     name: Create Release
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - name: Harden Runner
+        uses: step-security/harden-runner@5c7944e73c4c2a096b17a9cb74d65b6c2bbafbde # v2.9.1
+        with:
+          egress-policy: audit
+
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
         name: Checkout
         with:
           ref: ${{ github.head_ref || github.ref }}
 
       - name: Create release
-        uses: actions/create-release@v1
+        uses: actions/create-release@0cb9c9b65d5d1901c1f53e5e66eaf4afd303e70e # v1.1.4
         env:
           GITHUB_TOKEN: ${{ env.GH_TOKEN }}
         with:
diff --git a/.github/workflows/EVENT_update-linear-labels.yml b/.github/workflows/EVENT_update-linear-labels.yml
index c4ddf724b..d221d10f8 100644
--- a/.github/workflows/EVENT_update-linear-labels.yml
+++ b/.github/workflows/EVENT_update-linear-labels.yml
@@ -11,9 +11,14 @@ jobs:
     name: Update Linear
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - name: Harden Runner
+        uses: step-security/harden-runner@5c7944e73c4c2a096b17a9cb74d65b6c2bbafbde # v2.9.1
+        with:
+          egress-policy: audit
+
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
 
-      - uses: v7labs/update-linear-labels-action@v1
+      - uses: v7labs/update-linear-labels-action@0d527ddba6f2f0e0c28c3ec5c8a26767caf13ee3 # v1
         with:
           label_name: "DarwinPy"
           branch_name: "${{ github.head_ref }}"
diff --git a/.github/workflows/JOB_check-master-can-release.yml b/.github/workflows/JOB_check-master-can-release.yml
index eda37ed85..d6c8f7120 100644
--- a/.github/workflows/JOB_check-master-can-release.yml
+++ b/.github/workflows/JOB_check-master-can-release.yml
@@ -8,8 +8,13 @@ jobs:
   check-master-can-release:
     runs-on: ubuntu-latest
     steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@5c7944e73c4c2a096b17a9cb74d65b6c2bbafbde # v2.9.1
+        with:
+          egress-policy: audit
+
       - name: Check master is passing
-        uses: actions/github-script@v3
+        uses: actions/github-script@ffc2c79a5b2490bd33e0a41c1de74b877714d736 # v3.2.0
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           script: |
@@ -25,7 +30,7 @@ jobs:
             }
 
       - name: Check there are commits in master since last release
-        uses: actions/github-script@v3
+        uses: actions/github-script@ffc2c79a5b2490bd33e0a41c1de74b877714d736 # v3.2.0
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           script: |
diff --git a/.github/workflows/JOB_debug_contexts.yml b/.github/workflows/JOB_debug_contexts.yml
index bed1589f9..84c83a321 100644
--- a/.github/workflows/JOB_debug_contexts.yml
+++ b/.github/workflows/JOB_debug_contexts.yml
@@ -3,10 +3,18 @@
 on:
     workflow_call:
 
+permissions:
+  contents: read
+
 jobs:
   Debugging:
     runs-on: ubuntu-latest
     steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@5c7944e73c4c2a096b17a9cb74d65b6c2bbafbde # v2.9.1
+        with:
+          egress-policy: audit
+
       - name: Dump GitHub context
         env:
           GITHUB_CONTEXT: ${{ toJson(github) }}
diff --git a/.github/workflows/JOB_e2e.yml b/.github/workflows/JOB_e2e.yml
index ccd58b548..e6861bccc 100644
--- a/.github/workflows/JOB_e2e.yml
+++ b/.github/workflows/JOB_e2e.yml
@@ -26,8 +26,13 @@ jobs:
         os: [ubuntu-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - name: Harden Runner
+        uses: step-security/harden-runner@5c7944e73c4c2a096b17a9cb74d65b6c2bbafbde # v2.9.1
+        with:
+          egress-policy: audit
+
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
+      - uses: actions/setup-python@39cd14951b08e74b54015e9e001cdefcf80e669f # v5.1.1
         with:
           python-version: ${{ matrix.python-version }}
       - name: Upgrade pip
diff --git a/.github/workflows/JOB_format.yml b/.github/workflows/JOB_format.yml
index da37ff022..0003c6d7b 100644
--- a/.github/workflows/JOB_format.yml
+++ b/.github/workflows/JOB_format.yml
@@ -9,16 +9,24 @@ on:
         required: true
         type: string
 
+permissions:
+  contents: read
+
 jobs:
   format:
     if: ${{ inputs.files != '' }}
     runs-on: ubuntu-latest
     steps:
+    - name: Harden Runner
+      uses: step-security/harden-runner@5c7944e73c4c2a096b17a9cb74d65b6c2bbafbde # v2.9.1
+      with:
+        egress-policy: audit
+
     - name: Check out source repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
 
     - name: Set up Python environment
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@39cd14951b08e74b54015e9e001cdefcf80e669f # v5.1.1
       with:
         python-version: "3.11"
 
diff --git a/.github/workflows/JOB_generate_documentation.yml b/.github/workflows/JOB_generate_documentation.yml
index 7f9bb3195..e9f43288a 100644
--- a/.github/workflows/JOB_generate_documentation.yml
+++ b/.github/workflows/JOB_generate_documentation.yml
@@ -22,12 +22,17 @@ jobs:
       matrix:
         python-version: ["3.8", "3.9", "3.10", "3.11"]
     steps:
-      - uses: actions/checkout@v4
+      - name: Harden Runner
+        uses: step-security/harden-runner@5c7944e73c4c2a096b17a9cb74d65b6c2bbafbde # v2.9.1
+        with:
+          egress-policy: audit
+
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
         with:
           ref: ${{ github.head_ref || github.ref }}
 
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@39cd14951b08e74b54015e9e001cdefcf80e669f # v5.1.1
         with:
           python-version: ${{ matrix.python-version }}
 
@@ -53,7 +58,7 @@ jobs:
           sphinx-build -b html source/ docs/
       - name: Setup access to AWS
         id: aws_assume_role
-        uses: aws-actions/configure-aws-credentials@v4
+        uses: aws-actions/configure-aws-credentials@e3dd6a429d7300a6a4c196c26e071d42e0343502 # v4.0.2
         with:
           role-to-assume: ${{ secrets.DARWIN_PY_AWS_GITHUB_CICD_ROLE }}
           role-session-name: ${{ env.AWS_SESSION_NAME }}
diff --git a/.github/workflows/JOB_get_changed_files.yml b/.github/workflows/JOB_get_changed_files.yml
index 0b7018fd3..16419500e 100644
--- a/.github/workflows/JOB_get_changed_files.yml
+++ b/.github/workflows/JOB_get_changed_files.yml
@@ -20,6 +20,9 @@ on:
 env:
   GH_TOKEN: ${{ github.token }}
 
+permissions:
+  contents: read
+
 jobs:
   get_changed_files:
     name: Get changed files
@@ -30,7 +33,12 @@ jobs:
       yaml_changed_files: ${{ steps.changed_yaml_files.outputs.yaml_changed_files }}
       json_changed_files: ${{ steps.changed_json_files.outputs.json_changed_files }}
     steps:
-      - uses: actions/checkout@v4
+      - name: Harden Runner
+        uses: step-security/harden-runner@5c7944e73c4c2a096b17a9cb74d65b6c2bbafbde # v2.9.1
+        with:
+          egress-policy: audit
+
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
         with:
           ref: ${{ github.head_ref || github.ref }}
       - name: Get changed files
diff --git a/.github/workflows/JOB_lint.yml b/.github/workflows/JOB_lint.yml
index 4e65fa5bf..861e134c1 100644
--- a/.github/workflows/JOB_lint.yml
+++ b/.github/workflows/JOB_lint.yml
@@ -14,11 +14,16 @@ jobs:
     if: ${{ inputs.files != '' }}
     runs-on: ubuntu-latest
     steps:
+    - name: Harden Runner
+      uses: step-security/harden-runner@5c7944e73c4c2a096b17a9cb74d65b6c2bbafbde # v2.9.1
+      with:
+        egress-policy: audit
+
     - name: Check out source repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
 
     - name: Set up Python environment
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@39cd14951b08e74b54015e9e001cdefcf80e669f # v5.1.1
       with:
         python-version: "3.10"
 
diff --git a/.github/workflows/JOB_slack_message.yml b/.github/workflows/JOB_slack_message.yml
index 660140087..fd3c0e3ca 100644
--- a/.github/workflows/JOB_slack_message.yml
+++ b/.github/workflows/JOB_slack_message.yml
@@ -27,11 +27,19 @@ on:
 env:
   PREFIX: ${{ vars.SLACK_TEAM_TAG }}
 
+permissions:
+  contents: read
+
 jobs:
   slack-notify:
     name: Slack Notification
     runs-on: ubuntu-latest
     steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@5c7944e73c4c2a096b17a9cb74d65b6c2bbafbde # v2.9.1
+        with:
+          egress-policy: audit
+
       - name: Require secrets inherit
         run: |
           if [ -z "${{ secrets.SLACK_WEBHOOK }}" ]; then
diff --git a/.github/workflows/JOB_tests.yml b/.github/workflows/JOB_tests.yml
index 2916f2f8c..c057ab9b1 100644
--- a/.github/workflows/JOB_tests.yml
+++ b/.github/workflows/JOB_tests.yml
@@ -5,6 +5,9 @@ run-name: Tests
 on:
   workflow_call:
 
+permissions:
+  contents: read
+
 jobs:
   test:
     name: "Run Testing OS: ${{ matrix.os }} Python: ${{ matrix.python-version }}"
@@ -24,12 +27,17 @@ jobs:
             python-version: "3.9"
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v4
+      - name: Harden Runner
+        uses: step-security/harden-runner@5c7944e73c4c2a096b17a9cb74d65b6c2bbafbde # v2.9.1
+        with:
+          egress-policy: audit
+
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
         with:
           ref: ${{ github.head_ref || github.ref }}
 
       - name: Install Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@39cd14951b08e74b54015e9e001cdefcf80e669f # v5.1.1
         with:
           python-version: ${{ matrix.python-version }}
 
diff --git a/.github/workflows/JOB_typecheck.yml b/.github/workflows/JOB_typecheck.yml
index 36978adf0..ba61f4e99 100644
--- a/.github/workflows/JOB_typecheck.yml
+++ b/.github/workflows/JOB_typecheck.yml
@@ -9,16 +9,24 @@ on:
         description: "Files to lint"
         required: true
 
+permissions:
+  contents: read
+
 jobs:
   typecheck:
     if: ${{ inputs.files != '' }}
     runs-on: ubuntu-latest
     steps:
+    - name: Harden Runner
+      uses: step-security/harden-runner@5c7944e73c4c2a096b17a9cb74d65b6c2bbafbde # v2.9.1
+      with:
+        egress-policy: audit
+
     - name: Check out source repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
 
     - name: Set up Python environment
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@39cd14951b08e74b54015e9e001cdefcf80e669f # v5.1.1
       with:
         python-version: "3.10"
 
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
new file mode 100644
index 000000000..967697432
--- /dev/null
+++ b/.github/workflows/codeql.yml
@@ -0,0 +1,78 @@
+# For most projects, this workflow file will not need changing; you simply need
+# to commit it to your repository.
+#
+# You may wish to alter this file to override the set of languages analyzed,
+# or to provide custom queries or build logic.
+#
+# ******** NOTE ********
+# We have attempted to detect the languages in your repository. Please check
+# the `language` matrix defined below to confirm you have the correct set of
+# supported CodeQL languages.
+#
+name: "CodeQL"
+
+on:
+  push:
+    branches: ["master"]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: ["master"]
+  schedule:
+    - cron: "0 0 * * 1"
+
+permissions:
+  contents: read
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: ["javascript", "python"]
+        # CodeQL supports [ $supported-codeql-languages ]
+        # Learn more about CodeQL language support at https://aka.ms/codeql-docs/language-support
+
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@5c7944e73c4c2a096b17a9cb74d65b6c2bbafbde # v2.9.1
+        with:
+          egress-policy: audit
+
+      - name: Checkout repository
+        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
+
+      # Initializes the CodeQL tools for scanning.
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@883d8588e56d1753a8a58c1c86e88976f0c23449 # v3.26.3
+        with:
+          languages: ${{ matrix.language }}
+          # If you wish to specify custom queries, you can do so here or in a config file.
+          # By default, queries listed here will override any specified in a config file.
+          # Prefix the list here with "+" to use these queries and those in the config file.
+
+      # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
+      # If this step fails, then you should remove it and run the build manually (see below)
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@883d8588e56d1753a8a58c1c86e88976f0c23449 # v3.26.3
+
+      # ℹ️ Command-line programs to run using the OS shell.
+      # 📚 See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsrun
+
+      #   If the Autobuild fails above, remove it and uncomment the following three lines.
+      #   modify them (or add more) to build your code if your project, please refer to the EXAMPLE below for guidance.
+
+      # - run: |
+      #   echo "Run, Build Application using script"
+      #   ./location_of_script_within_repo/buildscript.sh
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@883d8588e56d1753a8a58c1c86e88976f0c23449 # v3.26.3
+        with:
+          category: "/language:${{matrix.language}}"
diff --git a/.github/workflows/dependency-review.yml b/.github/workflows/dependency-review.yml
new file mode 100644
index 000000000..bf2dcfbae
--- /dev/null
+++ b/.github/workflows/dependency-review.yml
@@ -0,0 +1,27 @@
+# Dependency Review Action
+#
+# This Action will scan dependency manifest files that change as part of a Pull Request,
+# surfacing known-vulnerable versions of the packages declared or updated in the PR.
+# Once installed, if the workflow run is marked as required,
+# PRs introducing known-vulnerable packages will be blocked from merging.
+#
+# Source repository: https://github.com/actions/dependency-review-action
+name: 'Dependency Review'
+on: [pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  dependency-review:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@5c7944e73c4c2a096b17a9cb74d65b6c2bbafbde # v2.9.1
+        with:
+          egress-policy: audit
+
+      - name: 'Checkout Repository'
+        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
+      - name: 'Dependency Review'
+        uses: actions/dependency-review-action@5a2ce3f5b92ee19cbb1541a4984c76d921601d7c # v4.3.4
diff --git a/.github/workflows/scorecards.yml b/.github/workflows/scorecards.yml
new file mode 100644
index 000000000..8fcac434e
--- /dev/null
+++ b/.github/workflows/scorecards.yml
@@ -0,0 +1,76 @@
+# This workflow uses actions that are not certified by GitHub. They are provided
+# by a third-party and are governed by separate terms of service, privacy
+# policy, and support documentation.
+
+name: Scorecard supply-chain security
+on:
+  # For Branch-Protection check. Only the default branch is supported. See
+  # https://github.com/ossf/scorecard/blob/main/docs/checks.md#branch-protection
+  branch_protection_rule:
+  # To guarantee Maintained check is occasionally updated. See
+  # https://github.com/ossf/scorecard/blob/main/docs/checks.md#maintained
+  schedule:
+    - cron: '20 7 * * 2'
+  push:
+    branches: ["master"]
+
+# Declare default permissions as read only.
+permissions: read-all
+
+jobs:
+  analysis:
+    name: Scorecard analysis
+    runs-on: ubuntu-latest
+    permissions:
+      # Needed to upload the results to code-scanning dashboard.
+      security-events: write
+      # Needed to publish results and get a badge (see publish_results below).
+      id-token: write
+      contents: read
+      actions: read
+
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@5c7944e73c4c2a096b17a9cb74d65b6c2bbafbde # v2.9.1
+        with:
+          egress-policy: audit
+
+      - name: "Checkout code"
+        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
+        with:
+          persist-credentials: false
+
+      - name: "Run analysis"
+        uses: ossf/scorecard-action@dc50aa9510b46c811795eb24b2f1ba02a914e534 # v2.3.3
+        with:
+          results_file: results.sarif
+          results_format: sarif
+          # (Optional) "write" PAT token. Uncomment the `repo_token` line below if:
+          # - you want to enable the Branch-Protection check on a *public* repository, or
+          # - you are installing Scorecards on a *private* repository
+          # To create the PAT, follow the steps in https://github.com/ossf/scorecard-action#authentication-with-pat.
+          # repo_token: ${{ secrets.SCORECARD_TOKEN }}
+
+          # Public repositories:
+          #   - Publish results to OpenSSF REST API for easy access by consumers
+          #   - Allows the repository to include the Scorecard badge.
+          #   - See https://github.com/ossf/scorecard-action#publishing-results.
+          # For private repositories:
+          #   - `publish_results` will always be set to `false`, regardless
+          #     of the value entered here.
+          publish_results: true
+
+      # Upload the results as artifacts (optional). Commenting out will disable uploads of run results in SARIF
+      # format to the repository Actions tab.
+      - name: "Upload artifact"
+        uses: actions/upload-artifact@834a144ee995460fba8ed112a2fc961b36a5ec5a # v4.3.6
+        with:
+          name: SARIF file
+          path: results.sarif
+          retention-days: 5
+
+      # Upload the results to GitHub's code scanning dashboard.
+      - name: "Upload to code-scanning"
+        uses: github/codeql-action/upload-sarif@883d8588e56d1753a8a58c1c86e88976f0c23449 # v3.26.3
+        with:
+          sarif_file: results.sarif
diff --git a/Dockerfile b/Dockerfile
index ba3ba36cf..269220f3b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # Use an official Python runtime as a parent image
-FROM python:3.10-slim
+FROM python:3.10-slim@sha256:8666a639a54acc810408e505e2c6b46b50834385701675ee177f578b3d2fdef9
 
 # Environment variables
 ARG YOUR_ENV