diff --git a/audit_workflow_runs.js b/audit_workflow_runs.js
index 928130c..cc441b9 100644
--- a/audit_workflow_runs.js
+++ b/audit_workflow_runs.js
@@ -109,6 +109,8 @@ async function createActionsRunResults(owner, repo, run, actions) {
       name: action[0],
       version: action[1],
       sha: action[2],
+      immutable_version: action[3],
+      digest: action[4],
     });
   }
   return action_run_results;
@@ -280,7 +282,7 @@ async function main() {
       ? auditEnterpriseOrOrg(orgOrEntName, orgOrEnt, startDate, endDate)
       : auditRepo(orgOrEntName, startDate, endDate);
 
-  console.log("org,repo,workflow,run_id,created_at,name,version,sha");
+  console.log("org,repo,workflow,run_id,created_at,name,version,sha,immutable_version,digest");
 
   const checkActions = Object.keys(actionsToAudit).length > 0;
 
diff --git a/audit_workflow_runs.test.js b/audit_workflow_runs.test.js
index 1e97bec..339081e 100644
--- a/audit_workflow_runs.test.js
+++ b/audit_workflow_runs.test.js
@@ -86,8 +86,8 @@ function testSearchForActionsLines() {
 2025-03-28T12:00:02Z Some other log line
   `;
   const expected1 = [
-    ["actions/checkout", "v4", "11bd71901bbe5b1630ceea73d27597364c9af683"],
-    ["actions/setup-node", "v3", "22cd71901bbe5b1630ceea73d27597364c9af684"],
+    ["actions/checkout", "v4", "11bd71901bbe5b1630ceea73d27597364c9af683", null, null],
+    ["actions/setup-node", "v3", "22cd71901bbe5b1630ceea73d27597364c9af684", null, null],
   ];
   assert.deepStrictEqual(
     searchForActionsLines(logContent1),
@@ -112,7 +112,7 @@ function testSearchForActionsLines() {
 2025-03-28T12:00:02Z Download action repository 'actions/setup-node@v3' (SHA:22cd71901bbe5b1630ceea73d27597364c9af684)
   `;
   const expected3 = [
-    ["actions/checkout", "v4", "11bd71901bbe5b1630ceea73d27597364c9af683"],
+    ["actions/checkout", "v4", "11bd71901bbe5b1630ceea73d27597364c9af683", null, null],
   ];
   assert.deepStrictEqual(
     searchForActionsLines(logContent3),
@@ -133,12 +133,88 @@ function testSearchForActionsLines() {
   const logContent5 = `2025-03-28T12:00:00Z Download action repository 'actions/checkout@v4' (SHA:invalid_sha)
 2025-03-28T12:00:01Z Malformed log line
   `;
-  const expected5 = [["actions/checkout", "v4", "invalid_sha"]];
+  const expected5 = [["actions/checkout", "v4", "invalid_sha", null, null]];
   assert.deepStrictEqual(
     searchForActionsLines(logContent5),
     expected5,
     "Should handle malformed log lines gracefully"
   );
+
+  // Test case: Immutable action groups, plus mutable actions
+  const logContent6 = `2025-07-14T13:16:54.1997507Z Current runner version: '2.326.0'
+2025-07-14T13:16:54.2032898Z ##[group]Runner Image Provisioner
+2025-07-14T13:16:54.2034192Z Hosted Compute Agent
+2025-07-14T13:16:54.2035482Z Version: 20250711.363
+2025-07-14T13:16:54.2036437Z Commit: 6785254374ce925a23743850c1cb91912ce5c14c
+2025-07-14T13:16:54.2037793Z Build Date: 2025-07-11T20:04:25Z
+2025-07-14T13:16:54.2038731Z ##[endgroup]
+2025-07-14T13:16:54.2039633Z ##[group]Operating System
+2025-07-14T13:16:54.2040684Z Ubuntu
+2025-07-14T13:16:54.2041493Z 24.04.2
+2025-07-14T13:16:54.2042229Z LTS
+2025-07-14T13:16:54.2043203Z ##[endgroup]
+2025-07-14T13:16:54.2044107Z ##[group]Runner Image
+2025-07-14T13:16:54.2045360Z Image: ubuntu-24.04
+2025-07-14T13:16:54.2046348Z Version: 20250710.1.0
+2025-07-14T13:16:54.2048046Z Included Software: https://github.com/actions/runner-images/blob/ubuntu24/20250710.1/images/ubuntu/Ubuntu2404-Readme.md
+2025-07-14T13:16:54.2050926Z Image Release: https://github.com/actions/runner-images/releases/tag/ubuntu24%2F20250710.1
+2025-07-14T13:16:54.2052697Z ##[endgroup]
+2025-07-14T13:16:54.2054600Z ##[group]GITHUB_TOKEN Permissions
+2025-07-14T13:16:54.2057484Z Contents: read
+2025-07-14T13:16:54.2058290Z Metadata: read
+2025-07-14T13:16:54.2059196Z Packages: read
+2025-07-14T13:16:54.2060021Z ##[endgroup]
+2025-07-14T13:16:54.2062876Z Secret source: Actions
+2025-07-14T13:16:54.2064129Z Prepare workflow directory
+2025-07-14T13:16:54.2740053Z Prepare all required actions
+2025-07-14T13:16:54.2798345Z Getting action download info
+2025-07-14T13:16:54.8182595Z ##[group]Download immutable action package 'actions/checkout@v4'
+2025-07-14T13:16:54.8183770Z Version: 4.2.2
+2025-07-14T13:16:54.8185077Z Digest: sha256:ccb2698953eaebd21c7bf6268a94f9c26518a7e38e27e0b83c1fe1ad049819b1
+2025-07-14T13:16:54.8186424Z Source commit SHA: 11bd71901bbe5b1630ceea73d27597364c9af683
+2025-07-14T13:16:54.8187251Z ##[endgroup]
+2025-07-14T13:16:54.9067829Z ##[group]Download immutable action package 'actions/setup-java@v4'
+2025-07-14T13:16:54.9068748Z Version: 4.7.1
+2025-07-14T13:16:54.9069568Z Digest: sha256:23223d64943473efb4336f60463c0429cd4f422cd5fc6c48a5cf0d5907c1aeac
+2025-07-14T13:16:54.9070517Z Source commit SHA: c5195efecf7bdfc987ee8bae7a71cb8b11521c00
+2025-07-14T13:16:54.9071298Z ##[endgroup]
+2025-07-14T13:16:55.2797700Z Download action repository 'sbt/setup-sbt@v1' (SHA:234370af1319038bf8dc432f8a7e4b83078a1781)
+2025-07-14T13:16:55.7318730Z Getting action download info
+2025-07-14T13:16:56.0547136Z ##[group]Download immutable action package 'actions/cache@v4'
+2025-07-14T13:16:56.0547618Z Version: 4.2.3
+2025-07-14T13:16:56.0548031Z Digest: sha256:c8a3bb963e1f1826d8fcc8d1354f0dd29d8ac1db1d4f6f20247055ae11b81ed9
+2025-07-14T13:16:56.0548578Z Source commit SHA: 5a3ec84eff668545956fd18022155c47e93e2684
+2025-07-14T13:16:56.0548968Z ##[endgroup]
+2025-07-14T13:16:56.1885796Z Complete job name: hello
+2025-07-14T13:16:56.2569979Z ##[group]Run actions/checkout@v4
+2025-07-14T13:16:56.2570683Z with:
+2025-07-14T13:16:56.2571032Z   repository: github/invented-repo-for-test
+2025-07-14T13:16:56.2571669Z   token: ***
+2025-07-14T13:16:56.2571947Z   ssh-strict: true
+2025-07-14T13:16:56.2572231Z   ssh-user: git
+2025-07-14T13:16:56.2572519Z   persist-credentials: true
+2025-07-14T13:16:56.2572857Z   clean: true
+2025-07-14T13:16:56.2573169Z   sparse-checkout-cone-mode: true
+2025-07-14T13:16:56.2573505Z   fetch-depth: 1
+2025-07-14T13:16:56.2573786Z   fetch-tags: false
+2025-07-14T13:16:56.2574068Z   show-progress: true
+2025-07-14T13:16:56.2574357Z   lfs: false
+2025-07-14T13:16:56.2574617Z   submodules: false
+2025-07-14T13:16:56.2575090Z   set-safe-directory: true
+2025-07-14T13:16:56.2575645Z ##[endgroup]
+2025-07-14T13:16:56.4670673Z Syncing repository: github/invented-repo-for-test`
+
+  const expected6 = [
+    ["actions/checkout", "v4", "11bd71901bbe5b1630ceea73d27597364c9af683", "4.2.2", "ccb2698953eaebd21c7bf6268a94f9c26518a7e38e27e0b83c1fe1ad049819b1"],
+    ["actions/setup-java", "v4", "c5195efecf7bdfc987ee8bae7a71cb8b11521c00", "4.7.1", "23223d64943473efb4336f60463c0429cd4f422cd5fc6c48a5cf0d5907c1aeac"],
+    ["sbt/setup-sbt", "v1", "234370af1319038bf8dc432f8a7e4b83078a1781", null, null],
+    ["actions/cache", "v4", "5a3ec84eff668545956fd18022155c47e93e2684", "4.2.3", "c8a3bb963e1f1826d8fcc8d1354f0dd29d8ac1db1d4f6f20247055ae11b81ed9"],
+  ];
+  assert.deepStrictEqual(
+    searchForActionsLines(logContent6),
+    expected6,
+    "Should extract actions from an immutable action group"
+  );
 }
 
 // Run the tests
diff --git a/audit_workflow_runs_utils.js b/audit_workflow_runs_utils.js
index 84216b9..e07c2dc 100644
--- a/audit_workflow_runs_utils.js
+++ b/audit_workflow_runs_utils.js
@@ -59,12 +59,18 @@ export function parseFromInputFile(actionsToAuditFilename) {
 }
 
 // Regex to spot, e.g. Download action repository 'actions/checkout@v4' (SHA:11bd71901bbe5b1630ceea73d27597364c9af683)
-const actionRegex = /^Download action repository '(.+?)' \(SHA:(.+?)\)/;
+const mutableActionPrefix = "Download action repository '";
+const mutableActionRegex = /^Download action repository '([^']+?)' \(SHA:([^)]+?)\)/;
+const immutableActionPrefix = "##[group]Download immutable action package '";
+const immutableActionRegex = /^##\[group\]Download immutable action package '([^'@]+?)@([^']*)'/;
+const gettingDownloadInfoLine = "Getting action download info";
 
 export function searchForActionsLines(logContent) {
   const logLines = logContent.split("\n");
   const actions = [];
   let foundActions = false;
+  let inImmutableGroup = false;
+  let immutableAction = {};
 
   for (const line of logLines) {
     // separate the timestamp from the data
@@ -72,18 +78,53 @@ export function searchForActionsLines(logContent) {
     if (data == undefined) {
       continue;
     }
-    if (data.startsWith("Download action repository '")) {
+    if (data.startsWith(mutableActionPrefix)) {
       foundActions = true;
-      const match = actionRegex.exec(data);
+      const match = mutableActionRegex.exec(data);
       if (match) {
         const action = match[1];
         const sha = match[2];
 
         const [repo, version] = action.split("@");
-        actions.push([repo, version, sha]);
+        actions.push([repo, version, sha, null, null]);
       }
-      // quit processing the log after the first line that is not an action, if we already found actions
+    } else if (data.startsWith(immutableActionPrefix)) {
+      foundActions = true;
+      inImmutableGroup = true;
+      const match = immutableActionRegex.exec(data);
+      if (match) {
+        const action = match[1];
+        const tag = match[2];
+
+        immutableAction = {
+          action: action,
+          tag: tag,
+          version: null,
+          sha: null,
+          digest: null,
+        }
+      }
+    } else if (inImmutableGroup && data.startsWith("##[endgroup]")) {
+      actions.push([immutableAction.action, immutableAction.tag, immutableAction.sha, immutableAction.version, immutableAction.digest]);
+      inImmutableGroup = false;
+    } else if (inImmutableGroup) {
+      const versionMatch = data.match(/Version: ([a-zA-Z0-9._-]+)/);
+      const shaMatch = data.match(/Source commit SHA: ([a-f0-9]{40,})/);
+      const digestMatch = data.match(/Digest: sha256:([a-f0-9]{64})/);
+      if (versionMatch) {
+        immutableAction.version = versionMatch[1];
+      }
+      if (shaMatch) {
+        immutableAction.sha = shaMatch[1];
+      }
+      if (digestMatch) {
+        immutableAction.digest = digestMatch[1];
+      }
+    } else if (data == gettingDownloadInfoLine) {
+      // continue processing the log until we find an action line
+      continue;
     } else if (foundActions) {
+      // quit processing the log after the first line that is not an action, if we already found actions
       break;
     }
   }
diff --git a/test.json b/test.json
new file mode 100644
index 0000000..1d0ccf8
--- /dev/null
+++ b/test.json
@@ -0,0 +1,4 @@
+{
+    "tj-actions/changed-files": ["0e58ed8671d6b60d0890c21b07f8835ace038e67"],
+    "reviewdog/*": ["*"]
+}
diff --git a/test2.json b/test2.json
new file mode 100644
index 0000000..7e22e19
--- /dev/null
+++ b/test2.json
@@ -0,0 +1,5 @@
+{
+    "aquasecurity/trivy-action": ["6e7b7d1fd3e4fef0c5fa8cce1229c54b2c9bd0d8"],
+    "actions/setup-node": ["*"],
+    "actions/checkout": ["*"]
+}