diff --git a/.github/workflows/brakeman.yml b/.github/workflows/brakeman.yml
index 3133c1ce..772d85b1 100644
--- a/.github/workflows/brakeman.yml
+++ b/.github/workflows/brakeman.yml
@@ -10,6 +10,9 @@ on:
   schedule:
     - cron: "0 21 * * 6"
 
+permissions:
+  contents: read
+
 jobs:
   brakeman:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/bundler-audit.yml b/.github/workflows/bundler-audit.yml
index 8d7fd106..62f4bb2a 100644
--- a/.github/workflows/bundler-audit.yml
+++ b/.github/workflows/bundler-audit.yml
@@ -10,6 +10,9 @@ on:
   schedule:
     - cron: "0 21 * * 6"
 
+permissions:
+  contents: read
+
 jobs:
   bundler-audit:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/dependency-review.yml b/.github/workflows/dependency-review.yml
index dba94cd1..62ab7825 100644
--- a/.github/workflows/dependency-review.yml
+++ b/.github/workflows/dependency-review.yml
@@ -15,4 +15,4 @@ jobs:
       - name: "Checkout Repository"
         uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
       - name: "Dependency Review"
-        uses: actions/dependency-review-action@v3
+        uses: actions/dependency-review-action@01bc87099ba56df1e897b6874784491ea6309bc4 # v3.1.4
diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 049963c3..cccdbb43 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -9,6 +9,9 @@ on:
   schedule:
     - cron: "0 21 * * 6"
 
+permissions:
+  contents: read
+
 jobs:
   build:
     runs-on: ubuntu-latest
@@ -16,26 +19,26 @@ jobs:
     steps:
       - name: Docker meta
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@9dc751fe249ad99385a2583ee0d084c400eee04e # v5.4.0
         with:
           images: biow0lf/evemonk-pg-extras
 
       - name: Login to Docker Hub
-        uses: docker/login-action@v3
+        uses: docker/login-action@343f7c4344506bcbf9b4de18042ae17996df046d # v3.0.0
         with:
           username: ${{ secrets.DOCKER_HUB_USERNAME }}
           password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}
 
       - name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
+        uses: docker/setup-qemu-action@68827325e0b33c7199eb31dd4e31fbe9023e06e3 # v3.0.0
 
       - name: Set up Docker Buildx
         id: buildx
-        uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@f95db51fddba0c2d1ec667646a06c2ce06100226 # v3.0.0
 
       - name: Build and push
         id: docker_build
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@4a13e500e55cf31b7a5d59a38ab2040ab0f42f56 # v5.1.0
         with:
           pull: true
           push: true
@@ -49,7 +52,7 @@ jobs:
         run: echo ${{ steps.docker_build.outputs.digest }}
 
       - name: Run Trivy vulnerability scanner
-        uses: aquasecurity/trivy-action@master
+        uses: aquasecurity/trivy-action@91713af97dc80187565512baba96e4364e983601 # master
         with:
           image-ref: "docker.io/biow0lf/evemonk-pg-extras:main"
           format: "table"
diff --git a/.github/workflows/fasterer.yml b/.github/workflows/fasterer.yml
index cba1f114..cb053173 100644
--- a/.github/workflows/fasterer.yml
+++ b/.github/workflows/fasterer.yml
@@ -10,6 +10,9 @@ on:
   schedule:
     - cron: "0 21 * * 6"
 
+permissions:
+  contents: read
+
 jobs:
   fasterer:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/hadolint.yml b/.github/workflows/hadolint.yml
index bb49f579..51c19f8b 100644
--- a/.github/workflows/hadolint.yml
+++ b/.github/workflows/hadolint.yml
@@ -16,4 +16,4 @@ jobs:
 
     steps:
       - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
-      - uses: hadolint/hadolint-action@v3.1.0
+      - uses: hadolint/hadolint-action@54c9adbab1582c2ef04b2016b760714a4bfde3cf # v3.1.0
diff --git a/.github/workflows/license_finder.yml b/.github/workflows/license_finder.yml
index ba04598d..5f74bb05 100644
--- a/.github/workflows/license_finder.yml
+++ b/.github/workflows/license_finder.yml
@@ -10,6 +10,9 @@ on:
   schedule:
     - cron: "0 21 * * 6"
 
+permissions:
+  contents: read
+
 jobs:
   license_finder:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/mdl.yml b/.github/workflows/mdl.yml
index f23ea23e..e2a581f7 100644
--- a/.github/workflows/mdl.yml
+++ b/.github/workflows/mdl.yml
@@ -16,4 +16,4 @@ jobs:
 
     steps:
       - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
-      - uses: bewuethr/mdl-action@v1.1.2
+      - uses: bewuethr/mdl-action@0d8e72b8dc605e02a94a4f00f93f13f26cf0e265 # v1.1.2
diff --git a/.github/workflows/rspec.yml b/.github/workflows/rspec.yml
index 33515dc3..44e6dd7b 100644
--- a/.github/workflows/rspec.yml
+++ b/.github/workflows/rspec.yml
@@ -18,6 +18,9 @@ env:
   SECRET_KEY_BASE: "919650e468e29e897a53ef239b6e0228f8b71ec6ed353b691d140945e98d0c6a63731811afc27b61b9094523740962499afabc6d7ad0c872f1d5b62472083a08"
   CI: "yes"
 
+permissions:
+  contents: read
+
 jobs:
   rspec:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/rubocop.yml b/.github/workflows/rubocop.yml
index 02585c46..fb8b888d 100644
--- a/.github/workflows/rubocop.yml
+++ b/.github/workflows/rubocop.yml
@@ -10,6 +10,9 @@ on:
   schedule:
     - cron: "0 21 * * 6"
 
+permissions:
+  contents: read
+
 jobs:
   rubocop:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/standard.yml b/.github/workflows/standard.yml
index 7ea21029..4a4facd7 100644
--- a/.github/workflows/standard.yml
+++ b/.github/workflows/standard.yml
@@ -10,6 +10,9 @@ on:
   schedule:
     - cron: "0 21 * * 6"
 
+permissions:
+  contents: read
+
 jobs:
   standard:
     runs-on: ubuntu-latest