diff --git a/.github/workflows/audit.yml b/.github/workflows/audit.yml
index d6044d22d80f5..bfd00cb443cf3 100644
--- a/.github/workflows/audit.yml
+++ b/.github/workflows/audit.yml
@@ -19,7 +19,12 @@ jobs:
     # Prevent sudden announcement of a new advisory from failing ci:
     continue-on-error: true
     steps:
-      - uses: actions/checkout@v4.1.7
-      - uses: rustsec/audit-check@v2.0.0
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@fa2e9d605c4eeb9fcad4c99c224cee0c6c7f3594 # v2.16.0
+        with:
+          egress-policy: audit
+
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
+      - uses: rustsec/audit-check@69366f33c96575abad1ee0dba8212993eecbe998 # v2.0.0
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/beta-test.yml b/.github/workflows/beta-test.yml
index 7770c6a83c46c..1ae703099af47 100644
--- a/.github/workflows/beta-test.yml
+++ b/.github/workflows/beta-test.yml
@@ -34,7 +34,12 @@ jobs:
     runs-on: ${{ matrix.platform }}
 
     steps:
-      - uses: actions/checkout@v4
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@fa2e9d605c4eeb9fcad4c99c224cee0c6c7f3594 # v2.16.0
+        with:
+          egress-policy: audit
+
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
 
       - run: rustup update beta
 
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 50e754160e40c..543a80cb5250b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -34,10 +34,15 @@ jobs:
     runs-on: ${{ matrix.platform }}
 
     steps:
-      - uses: actions/checkout@v4.1.7
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@fa2e9d605c4eeb9fcad4c99c224cee0c6c7f3594 # v2.16.0
+        with:
+          egress-policy: audit
+
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
 
       - name: Setup Rust toolchain and cache
-        uses: actions-rust-lang/setup-rust-toolchain@v1.11.0
+        uses: actions-rust-lang/setup-rust-toolchain@9399c7bb15d4c7d47b27263d024f0a4978346ba4 # v1.11.0
 
       - name: cargo fmt
         run: cargo fmt --all -- --check
@@ -62,10 +67,15 @@ jobs:
     runs-on: ${{ matrix.platform }}
 
     steps:
-      - uses: actions/checkout@v4.1.7
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@fa2e9d605c4eeb9fcad4c99c224cee0c6c7f3594 # v2.16.0
+        with:
+          egress-policy: audit
+
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
 
       - name: Setup Rust toolchain and cache
-        uses: actions-rust-lang/setup-rust-toolchain@v1.11.0
+        uses: actions-rust-lang/setup-rust-toolchain@9399c7bb15d4c7d47b27263d024f0a4978346ba4 # v1.11.0
 
       - name: Tests
         run: cargo test --workspace --profile ci --exclude nu_plugin_*
@@ -91,10 +101,15 @@ jobs:
     runs-on: ${{ matrix.platform }}
 
     steps:
-      - uses: actions/checkout@v4.1.7
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@fa2e9d605c4eeb9fcad4c99c224cee0c6c7f3594 # v2.16.0
+        with:
+          egress-policy: audit
+
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
 
       - name: Setup Rust toolchain and cache
-        uses: actions-rust-lang/setup-rust-toolchain@v1.11.0
+        uses: actions-rust-lang/setup-rust-toolchain@9399c7bb15d4c7d47b27263d024f0a4978346ba4 # v1.11.0
 
       - name: Install Nushell
         run: cargo install --path . --locked --force
@@ -106,7 +121,7 @@ jobs:
         run: nu .github/workflows/check-msrv.nu
 
       - name: Setup Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
         with:
           python-version: "3.10"
 
@@ -142,10 +157,15 @@ jobs:
     runs-on: ${{ matrix.platform }}
 
     steps:
-      - uses: actions/checkout@v4.1.7
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@fa2e9d605c4eeb9fcad4c99c224cee0c6c7f3594 # v2.16.0
+        with:
+          egress-policy: audit
+
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
 
       - name: Setup Rust toolchain and cache
-        uses: actions-rust-lang/setup-rust-toolchain@v1.11.0
+        uses: actions-rust-lang/setup-rust-toolchain@9399c7bb15d4c7d47b27263d024f0a4978346ba4 # v1.11.0
 
       - name: Clippy
         run: cargo clippy --package nu_plugin_* -- $CLIPPY_OPTIONS
@@ -183,10 +203,15 @@ jobs:
 
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4.1.7
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@fa2e9d605c4eeb9fcad4c99c224cee0c6c7f3594 # v2.16.0
+        with:
+          egress-policy: audit
+
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
 
       - name: Setup Rust toolchain and cache
-        uses: actions-rust-lang/setup-rust-toolchain@v1.11.0
+        uses: actions-rust-lang/setup-rust-toolchain@9399c7bb15d4c7d47b27263d024f0a4978346ba4 # v1.11.0
 
       - name: Add wasm32-unknown-unknown target
         run: rustup target add wasm32-unknown-unknown
diff --git a/.github/workflows/labels.yml b/.github/workflows/labels.yml
index 96b84c6a4734d..8ff185e308e95 100644
--- a/.github/workflows/labels.yml
+++ b/.github/workflows/labels.yml
@@ -13,7 +13,12 @@ jobs:
     runs-on: ubuntu-latest
     if: github.repository_owner == 'nushell'
     steps:
-      - uses: actions/labeler@v5
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@fa2e9d605c4eeb9fcad4c99c224cee0c6c7f3594 # v2.16.0
+        with:
+          egress-policy: audit
+
+      - uses: actions/labeler@8558fd74291d67161a8a78ce36a881fa63b766a9 # v5.0.0
         with:
           repo-token: "${{ secrets.GITHUB_TOKEN }}"
           sync-labels: true
\ No newline at end of file
diff --git a/.github/workflows/milestone.yml b/.github/workflows/milestone.yml
index 18eef4213d284..cb0d33598a68d 100644
--- a/.github/workflows/milestone.yml
+++ b/.github/workflows/milestone.yml
@@ -14,15 +14,20 @@ jobs:
     runs-on: ubuntu-latest
     name: Milestone Update
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@fa2e9d605c4eeb9fcad4c99c224cee0c6c7f3594 # v2.16.0
+        with:
+          egress-policy: audit
+
       - name: Set Milestone for PR
-        uses: hustcer/milestone-action@main
+        uses: hustcer/milestone-action@ebed8d5daafd855a600d7e665c1b130f06d24130 # main
         if: github.event.pull_request.merged == true
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       # Bind milestone to closed issue that has a merged PR fix
       - name: Set Milestone for Issue
-        uses: hustcer/milestone-action@v2
+        uses: hustcer/milestone-action@a32390684f8f7ccbd24a6ec928da4431dbf1e309 # v2.12
         if: github.event.issue.state == 'closed'
         with:
           action: bind-issue
diff --git a/.github/workflows/nightly-build.yml b/.github/workflows/nightly-build.yml
index 1e161f83fe501..9eb8501db7f93 100644
--- a/.github/workflows/nightly-build.yml
+++ b/.github/workflows/nightly-build.yml
@@ -27,8 +27,13 @@ jobs:
     # This job is required by the release job, so we should make it run both from Nushell repo and nightly repo
     # if: github.repository == 'nushell/nightly'
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@fa2e9d605c4eeb9fcad4c99c224cee0c6c7f3594 # v2.16.0
+        with:
+          egress-policy: audit
+
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
         if: github.repository == 'nushell/nightly'
         with:
           ref: main
@@ -37,7 +42,7 @@ jobs:
           token: ${{ secrets.WORKFLOW_TOKEN }}
 
       - name: Setup Nushell
-        uses: hustcer/setup-nu@v3
+        uses: hustcer/setup-nu@92c296ba1ba2ba04cc948ab64ddefe192dc13f0c # v3.23
         if: github.repository == 'nushell/nightly'
         with:
           version: 0.103.0
@@ -122,7 +127,12 @@ jobs:
     runs-on: ${{matrix.os}}
 
     steps:
-    - uses: actions/checkout@v4
+    - name: Harden the runner (Audit all outbound calls)
+      uses: step-security/harden-runner@fa2e9d605c4eeb9fcad4c99c224cee0c6c7f3594 # v2.16.0
+      with:
+        egress-policy: audit
+
+    - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
       with:
         ref: main
         fetch-depth: 0
@@ -132,13 +142,13 @@ jobs:
         echo "targets = ['${{matrix.target}}']" >> rust-toolchain.toml
 
     - name: Setup Rust toolchain and cache
-      uses: actions-rust-lang/setup-rust-toolchain@v1.11.0
+      uses: actions-rust-lang/setup-rust-toolchain@9399c7bb15d4c7d47b27263d024f0a4978346ba4 # v1.11.0
       # WARN: Keep the rustflags to prevent from the winget submission error: `CAQuietExec: Error 0xc0000135`
       with:
         rustflags: ''
 
     - name: Setup Nushell
-      uses: hustcer/setup-nu@v3
+      uses: hustcer/setup-nu@92c296ba1ba2ba04cc948ab64ddefe192dc13f0c # v3.23
       with:
         version: 0.103.0
 
@@ -153,7 +163,7 @@ jobs:
 
     - name: Create an Issue for Release Failure
       if: ${{ failure() }}
-      uses: JasonEtco/create-an-issue@v2.9.2
+      uses: JasonEtco/create-an-issue@1b14a70e4d8dc185e5cc76d3bec9eab20257b2c5 # v2.9.2
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       with:
@@ -171,7 +181,7 @@ jobs:
     # REF: https://github.com/marketplace/actions/gh-release
     # Create a release only in nushell/nightly repo
     - name: Publish Archive
-      uses: softprops/action-gh-release@v2.0.9
+      uses: step-security/action-gh-release@dc29ef0d1f6f9a032a97ec797d9cb7ea788dde41 # v2.6.1
       if: ${{ startsWith(github.repository, 'nushell/nightly') }}
       with:
         prerelease: true
@@ -188,15 +198,20 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       # Sleep for 30 minutes, waiting for the release to be published
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@fa2e9d605c4eeb9fcad4c99c224cee0c6c7f3594 # v2.16.0
+        with:
+          egress-policy: audit
+
       - name: Waiting for Release
         run: sleep 1800
 
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
         with:
           ref: main
 
       - name: Setup Nushell
-        uses: hustcer/setup-nu@v3
+        uses: hustcer/setup-nu@92c296ba1ba2ba04cc948ab64ddefe192dc13f0c # v3.23
         with:
           version: 0.103.0
 
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index a192a38a24bb2..fbf51bb29646c 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -73,21 +73,26 @@ jobs:
     runs-on: ${{matrix.os}}
 
     steps:
-    - uses: actions/checkout@v4
+    - name: Harden the runner (Audit all outbound calls)
+      uses: step-security/harden-runner@fa2e9d605c4eeb9fcad4c99c224cee0c6c7f3594 # v2.16.0
+      with:
+        egress-policy: audit
+
+    - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
 
     - name: Update Rust Toolchain Target
       run: |
         echo "targets = ['${{matrix.target}}']" >> rust-toolchain.toml
 
     - name: Setup Rust toolchain
-      uses: actions-rust-lang/setup-rust-toolchain@v1.11.0
+      uses: actions-rust-lang/setup-rust-toolchain@9399c7bb15d4c7d47b27263d024f0a4978346ba4 # v1.11.0
       # WARN: Keep the rustflags to prevent from the winget submission error: `CAQuietExec: Error 0xc0000135`
       with:
         cache: false
         rustflags: ''
 
     - name: Setup Nushell
-      uses: hustcer/setup-nu@v3
+      uses: hustcer/setup-nu@92c296ba1ba2ba04cc948ab64ddefe192dc13f0c # v3.23
       with:
         version: 0.103.0
 
@@ -103,7 +108,7 @@ jobs:
     # WARN: Don't upgrade this action due to the release per asset issue.
     # See: https://github.com/softprops/action-gh-release/issues/445
     - name: Publish Archive
-      uses: softprops/action-gh-release@v2.0.5
+      uses: step-security/action-gh-release@dc29ef0d1f6f9a032a97ec797d9cb7ea788dde41 # v2.6.1
       if: ${{ startsWith(github.ref, 'refs/tags/') }}
       with:
         draft: true
@@ -116,6 +121,11 @@ jobs:
     name: Create Sha256sum
     runs-on: ubuntu-latest
     steps:
+    - name: Harden the runner (Audit all outbound calls)
+      uses: step-security/harden-runner@fa2e9d605c4eeb9fcad4c99c224cee0c6c7f3594 # v2.16.0
+      with:
+        egress-policy: audit
+
     - name: Download Release Archives
       env:
         GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -127,7 +137,7 @@ jobs:
     - name: Create Checksums
       run: cd release && shasum -a 256 * > ../SHA256SUMS
     - name: Publish Checksums
-      uses: softprops/action-gh-release@v2.0.5
+      uses: step-security/action-gh-release@dc29ef0d1f6f9a032a97ec797d9cb7ea788dde41 # v2.6.1
       with:
         draft: true
         files: SHA256SUMS
diff --git a/.github/workflows/typos.yml b/.github/workflows/typos.yml
index eb57d8c471c12..1390832189280 100644
--- a/.github/workflows/typos.yml
+++ b/.github/workflows/typos.yml
@@ -6,8 +6,13 @@ jobs:
     name: Spell Check with Typos
     runs-on: ubuntu-latest
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@fa2e9d605c4eeb9fcad4c99c224cee0c6c7f3594 # v2.16.0
+        with:
+          egress-policy: audit
+
       - name: Checkout Actions Repository
-        uses: actions/checkout@v4.1.7
+        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
 
       - name: Check spelling
-        uses: crate-ci/typos@v1.31.1
+        uses: crate-ci/typos@b1a1ef3893ff35ade0cfa71523852a49bfd05d19 # v1.31.1
diff --git a/.github/workflows/winget-submission.yml b/.github/workflows/winget-submission.yml
index 3470fed4e2cc2..f58f449511fbb 100644
--- a/.github/workflows/winget-submission.yml
+++ b/.github/workflows/winget-submission.yml
@@ -16,8 +16,13 @@ jobs:
     name: Publish winget package
     runs-on: ubuntu-latest
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@fa2e9d605c4eeb9fcad4c99c224cee0c6c7f3594 # v2.16.0
+        with:
+          egress-policy: audit
+
       - name: Submit package to Windows Package Manager Community Repository
-        uses: vedantmgoyal2009/winget-releaser@v2
+        uses: vedantmgoyal2009/winget-releaser@4ffc7888bffd451b357355dc214d43bb9f23917e # v2
         with:
           identifier: Nushell.Nushell
           # Exclude all `*-msvc-full.msi` full release files,