diff --git a/.github/workflows/auto-merge.yaml b/.github/workflows/auto-merge.yaml
index 0ff3098e6..96cb4640d 100644
--- a/.github/workflows/auto-merge.yaml
+++ b/.github/workflows/auto-merge.yaml
@@ -18,11 +18,11 @@ jobs:
     runs-on: ubuntu-latest
     if: github.actor == 'dependabot[bot]'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
         with:
           token: ${{ secrets.DEPENDABOT_PAT }}
 
-      - uses: ahmadnassri/action-dependabot-auto-merge@v2
+      - uses: ahmadnassri/action-dependabot-auto-merge@45fc124d949b19b6b8bf6645b6c9d55f4f9ac61a # v2.6.6
         with:
           github-token: ${{ secrets.DEPENDABOT_PAT }}
           target: all
\ No newline at end of file
diff --git a/.github/workflows/build-test.yml b/.github/workflows/build-test.yml
index 11bda1298..50e1f1ecd 100644
--- a/.github/workflows/build-test.yml
+++ b/.github/workflows/build-test.yml
@@ -7,15 +7,18 @@ on:
       - '**.mod'
   workflow_dispatch:
 
+permissions:
+  contents: read
+
 jobs:
   lint:
     name: Lint Test
     if: ${{ !endsWith(github.actor, '[bot]') }}
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-      - uses: projectdiscovery/actions/setup/go@v1
-      - uses: projectdiscovery/actions/golangci-lint/v2@v1
+      - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
+      - uses: projectdiscovery/actions/setup/go@4ff2f2094e67bb1819a069aa130a49463ecaa3f3 # v1.29.4
+      - uses: projectdiscovery/actions/golangci-lint/v2@4ff2f2094e67bb1819a069aa130a49463ecaa3f3 # v1.29.4
 
   build:
     name: Test Builds
@@ -25,8 +28,8 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest, macOS-latest]
     steps:
-      - uses: actions/checkout@v4
-      - uses: projectdiscovery/actions/setup/go@v1
+      - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
+      - uses: projectdiscovery/actions/setup/go@4ff2f2094e67bb1819a069aa130a49463ecaa3f3 # v1.29.4
       - run: go build .
         working-directory: cmd/httpx/
 
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 3080047d4..7b1d674d0 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -25,16 +25,16 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@a37ce9120846195fa4ece8f58b268e6043cb2f26 # v3.7.0
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v2
+      uses: github/codeql-action/init@5595ccaf912efad79be6eef63a5619ff05969be3 # v4.37.6
       with:
         languages: ${{ matrix.language }}
 
     - name: Autobuild
-      uses: github/codeql-action/autobuild@v2
+      uses: github/codeql-action/autobuild@5595ccaf912efad79be6eef63a5619ff05969be3 # v4.37.6
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v2
\ No newline at end of file
+      uses: github/codeql-action/analyze@5595ccaf912efad79be6eef63a5619ff05969be3 # v4.37.6
\ No newline at end of file
diff --git a/.github/workflows/compatibility-checks.yaml b/.github/workflows/compatibility-checks.yaml
index a2641e701..b0cb1ad93 100644
--- a/.github/workflows/compatibility-checks.yaml
+++ b/.github/workflows/compatibility-checks.yaml
@@ -13,7 +13,7 @@ jobs:
     permissions:
       contents: write
     steps:
-      - uses: actions/checkout@v4
-      - uses: projectdiscovery/actions/setup/go/compat-checks@master
+      - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
+      - uses: projectdiscovery/actions/setup/go/compat-checks@5ad9460589b729fcc7210fd809063a848ea407db # master
         with:
           go-version-file: 'go.mod'
diff --git a/.github/workflows/dep-auto-merge.yml b/.github/workflows/dep-auto-merge.yml
index 84b26e1fe..47823ab19 100644
--- a/.github/workflows/dep-auto-merge.yml
+++ b/.github/workflows/dep-auto-merge.yml
@@ -16,11 +16,11 @@ jobs:
     runs-on: ubuntu-latest
     if: github.actor == 'dependabot[bot]'
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@a37ce9120846195fa4ece8f58b268e6043cb2f26 # v3.7.0
         with:
           token: ${{ secrets.DEPENDABOT_PAT }}
 
-      - uses: ahmadnassri/action-dependabot-auto-merge@v2
+      - uses: ahmadnassri/action-dependabot-auto-merge@45fc124d949b19b6b8bf6645b6c9d55f4f9ac61a # v2.6.6
         with:
           github-token: ${{ secrets.DEPENDABOT_PAT }}
           target: all
\ No newline at end of file
diff --git a/.github/workflows/dockerhub-push.yml b/.github/workflows/dockerhub-push.yml
index b540657d1..88a1dd68a 100644
--- a/.github/workflows/dockerhub-push.yml
+++ b/.github/workflows/dockerhub-push.yml
@@ -7,12 +7,15 @@ on:
       - completed
   workflow_dispatch:
 
+permissions:
+  contents: read
+
 jobs:
   docker:
     runs-on: ubuntu-latest-16-cores
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@a37ce9120846195fa4ece8f58b268e6043cb2f26 # v3.7.0
 
       - name: Get Github tag
         id: meta
@@ -20,19 +23,19 @@ jobs:
           curl --silent "https://api.github.com/repos/projectdiscovery/httpx/releases/latest" | jq -r .tag_name | xargs -I {} echo TAG={} >> $GITHUB_OUTPUT
 
       - name: Set up QEMU
-        uses: docker/setup-qemu-action@v2
+        uses: docker/setup-qemu-action@2b82ce82d56a2a04d2637cd93a637ae1b359c0a7 # v2.2.0
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@885d1462b80bc1c1c7f0b00334ad271f09369c55 # v2.10.0
 
       - name: Login to DockerHub
-        uses: docker/login-action@v2 
+        uses: docker/login-action@465a07811f14bebb1938fbed4728c6a1ff8901fc # v2.2.0
         with:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_TOKEN }}
 
       - name: Build and push
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@0a97817b6ade9f46837855d676c4cca3a2471fc9 # v4.2.1
         with:
           context: .
           platforms: linux/amd64,linux/arm64,linux/arm
diff --git a/.github/workflows/functional-test.yml b/.github/workflows/functional-test.yml
index f712dddae..e415d2892 100644
--- a/.github/workflows/functional-test.yml
+++ b/.github/workflows/functional-test.yml
@@ -7,6 +7,9 @@ on:
       - '**.mod'
   workflow_dispatch:
 
+permissions:
+  contents: read
+
 jobs:
   functional:
     name: Functional Test
@@ -16,9 +19,9 @@ jobs:
         os: [ubuntu-latest, windows-latest, macOS-latest]
     steps:
       - name: Check out code
-        uses: actions/checkout@v4
+        uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
 
-      - uses: projectdiscovery/actions/setup/go@v1
+      - uses: projectdiscovery/actions/setup/go@4ff2f2094e67bb1819a069aa130a49463ecaa3f3 # v1.29.4
 
       - name: Functional Tests
         run: |
diff --git a/.github/workflows/release-binary.yml b/.github/workflows/release-binary.yml
index b906129db..ff25738c0 100644
--- a/.github/workflows/release-binary.yml
+++ b/.github/workflows/release-binary.yml
@@ -6,19 +6,23 @@ on:
       - '*'
   workflow_dispatch:
 
+permissions:
+  # goreleaser creates the release and uploads the binaries.
+  contents: write
+
 jobs:
   release:
     runs-on: ubuntu-latest-16-cores
     steps:
       - name: "Check out code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
         with:
           fetch-depth: 0
 
-      - uses: projectdiscovery/actions/setup/go@v1
+      - uses: projectdiscovery/actions/setup/go@4ff2f2094e67bb1819a069aa130a49463ecaa3f3 # v1.29.4
 
       - name: "Create release on GitHub"
-        uses: goreleaser/goreleaser-action@v4
+        uses: goreleaser/goreleaser-action@5fdedb94abba051217030cc86d4523cf3f02243d # v4.6.0
         with:
           args: "release --clean"
           version: latest
diff --git a/.github/workflows/release-test.yml b/.github/workflows/release-test.yml
index c163e9c72..71f60ba71 100644
--- a/.github/workflows/release-test.yml
+++ b/.github/workflows/release-test.yml
@@ -7,19 +7,22 @@ on:
       - '**.mod'
   workflow_dispatch:
 
+permissions:
+  contents: read
+
 jobs:
   release-test:
     runs-on: ubuntu-latest-16-cores
     steps:
       - name: "Check out code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
         with:
           fetch-depth: 0
 
-      - uses: projectdiscovery/actions/setup/go@v1
+      - uses: projectdiscovery/actions/setup/go@4ff2f2094e67bb1819a069aa130a49463ecaa3f3 # v1.29.4
 
       - name: release test
-        uses: goreleaser/goreleaser-action@v4
+        uses: goreleaser/goreleaser-action@5fdedb94abba051217030cc86d4523cf3f02243d # v4.6.0
         with:
           args: "release --clean --snapshot"
           version: latest
diff --git a/.github/workflows/stale.yaml b/.github/workflows/stale.yaml
index 5254b32a0..eb9c6ffe5 100644
--- a/.github/workflows/stale.yaml
+++ b/.github/workflows/stale.yaml
@@ -13,7 +13,7 @@ jobs:
       issues: write
       pull-requests: write
     steps:
-      - uses: actions/stale@v9
+      - uses: actions/stale@5bef64f19d7facfb25b37b414482c7164d639639 # v9.1.0
         with:
           days-before-stale: 90
           days-before-close: 7