diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index bc600b84..bc2178f1 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -46,7 +46,7 @@ jobs:
     continue-on-error: ${{ matrix.experimental || endsWith(matrix.ruby, 'head') }}
     steps:
       - name: Harden the runner (Audit all outbound calls)
-        uses: step-security/harden-runner@b09bb98e06d4d774595224525879c09bc6e98c40 # v2.20.1
+        uses: step-security/harden-runner@05e31511f85b41b11d1cf0ef85d0992719546e2c # v2.21.0
         with:
           egress-policy: audit
 
diff --git a/.github/workflows/scorecards.yml b/.github/workflows/scorecards.yml
index ae6895ab..8ba1c08d 100644
--- a/.github/workflows/scorecards.yml
+++ b/.github/workflows/scorecards.yml
@@ -40,7 +40,7 @@ jobs:
 
     steps:
       - name: Harden the runner (Audit all outbound calls)
-        uses: step-security/harden-runner@b09bb98e06d4d774595224525879c09bc6e98c40 # v2.20.1
+        uses: step-security/harden-runner@05e31511f85b41b11d1cf0ef85d0992719546e2c # v2.21.0
         with:
           egress-policy: audit
 
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index cab2e719..897e1a06 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -45,7 +45,7 @@ jobs:
     continue-on-error: ${{ matrix.experimental || endsWith(matrix.ruby, 'head') }}
     steps:
       - name: Harden the runner (Audit all outbound calls)
-        uses: step-security/harden-runner@b09bb98e06d4d774595224525879c09bc6e98c40 # v2.20.1
+        uses: step-security/harden-runner@05e31511f85b41b11d1cf0ef85d0992719546e2c # v2.21.0
         with:
           egress-policy: audit