diff --git a/.github/workflows/links_checker.yml b/.github/workflows/links_checker.yml
index f796ee6cb3..474bcdbe48 100644
--- a/.github/workflows/links_checker.yml
+++ b/.github/workflows/links_checker.yml
@@ -20,7 +20,7 @@ jobs:
 
       - name: Check all links at README.md but skips translations files
         id: lychee
-        uses: lycheeverse/lychee-action@v1.4.1
+        uses: lycheeverse/lychee-action@f1da3291e1d03cbe11a413ae9f16b62fec99e6b6 # v1.4.1
         with:
           output: ${{ env.REPORT_FILE }}
           format: markdown
@@ -46,7 +46,7 @@ jobs:
         run: echo Lychee exit with ${{ steps.lychee.outputs.exit_code }}
 
       - name: Find the last report issue open
-        uses: micalevisk/last-issue-action@v1.2
+        uses: micalevisk/last-issue-action@18b4e4f7c1daa4dae44daa55a6614e592d03b154 # v1.2
         id: last_issue
         with:
           state: open
@@ -58,7 +58,7 @@ jobs:
 
       - name: Create issue from report file
         if: ${{ steps.last_issue.outputs.has_found == 'false' }}
-        uses: peter-evans/create-issue-from-file@v4
+        uses: peter-evans/create-issue-from-file@433e51abf769039ee20ba1293a088ca19d573b7f # v4
         with:
           title: Link checker report
           content-filepath: ${{ env.REPORT_FILE }}
@@ -69,7 +69,7 @@ jobs:
 
       - name: Update last report open issue created
         if: ${{ steps.last_issue.outputs.has_found == 'true' }}
-        uses: peter-evans/create-issue-from-file@v4
+        uses: peter-evans/create-issue-from-file@433e51abf769039ee20ba1293a088ca19d573b7f # v4
         with:
           title: Link checker report
           content-filepath: ${{ env.REPORT_FILE }}
@@ -80,6 +80,6 @@ jobs:
 
       - name: Close last report open issue
         if: ${{ steps.lychee.outputs.exit_code == 0 }}
-        uses: peter-evans/close-issue@v2
+        uses: peter-evans/close-issue@1373cadf1f0c96c1420bc000cfba2273ea307fd1 # v2
         with:
           issue-number: ${{ steps.last_issue.outputs.issue_number }}