diff --git a/.github/workflows/cifuzz.yml b/.github/workflows/cifuzz.yml
index 7d686ab7e81..458fd060f03 100644
--- a/.github/workflows/cifuzz.yml
+++ b/.github/workflows/cifuzz.yml
@@ -53,7 +53,7 @@ jobs:
         path: ./out/artifacts   
     - name: Upload Sarif
       if: always() && steps.build.outcome == 'success'
-      uses: github/codeql-action/upload-sarif@v3
+      uses: github/codeql-action/upload-sarif@v3.26.6
       with:
         # Path to SARIF file relative to the root of the repository
         sarif_file: cifuzz-sarif/results.sarif
diff --git a/.github/workflows/icu_merge_ci.yml b/.github/workflows/icu_merge_ci.yml
index 7c5eba63007..76a94b99479 100644
--- a/.github/workflows/icu_merge_ci.yml
+++ b/.github/workflows/icu_merge_ci.yml
@@ -841,7 +841,7 @@ jobs:
     steps:
       - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
       - name: Set up MSBuild
-        uses: microsoft/setup-msbuild@v1
+        uses: microsoft/setup-msbuild@v2
       - name: Build Solution
         run: msbuild icu4c/source/allinone/allinone.sln /p:Configuration=${{ matrix.config }} /p:Platform=${{ matrix.platform }}
       - name: Run Tests (icucheck.bat)
@@ -872,7 +872,7 @@ jobs:
           git config --global core.autocrlf input
       - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
       - name: Restore Cygwin cache
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         with:
           path: ${{ env.CYG_CACHE }}
           key: ${{ hashFiles('.github/workflows/icu_merge_ci.yml') }}
diff --git a/.github/workflows/scorecard.yml b/.github/workflows/scorecard.yml
index 6f669feae9a..380efec2f68 100644
--- a/.github/workflows/scorecard.yml
+++ b/.github/workflows/scorecard.yml
@@ -59,6 +59,6 @@ jobs:
 
       # Upload the results to GitHub's code scanning dashboard.
       - name: "Upload to code-scanning"
-        uses: github/codeql-action/upload-sarif@3e0e84636c6f5df46a2cb232ae1dd1384713150d # v2.25.15
+        uses: github/codeql-action/upload-sarif@9b41ced437d4a4f34bf0b740f80b4e52d3c4bccd # v2.25.15
         with:
           sarif_file: results.sarif