diff --git a/.github/workflows/dart.yml b/.github/workflows/dart.yml
index fceb36388..027f8a662 100644
--- a/.github/workflows/dart.yml
+++ b/.github/workflows/dart.yml
@@ -32,7 +32,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
       - name: Set up Dart ${{ matrix.dart-sdk }}
-        uses: dart-lang/setup-dart@v1
+        uses: dart-lang/setup-dart@e51d8e571e22473a2ddebf0ef8a2123f0ab2c02c # v1
         with:
           sdk: ${{ matrix.dart-sdk}}
       - name: Run format
diff --git a/.github/workflows/javascript.yml b/.github/workflows/javascript.yml
index 5e69e9f98..27171e373 100644
--- a/.github/workflows/javascript.yml
+++ b/.github/workflows/javascript.yml
@@ -27,7 +27,7 @@ jobs:
       - uses: actions/setup-node@v6
         with:
           node-version: 24.x
-      - uses: denoland/setup-deno@v2
+      - uses: denoland/setup-deno@667a34cdef165d8d2b2e98dde39547c9daac7282 # v2
         with:
           deno-version: v2.x
       - name: Run JavaScript Code
diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index ac58c29b9..de7f0ca93 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -36,7 +36,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
       - name: Set up Ruby
-        uses: ruby/setup-ruby@v1
+        uses: ruby/setup-ruby@eab2afb99481ca09a4e91171a8e0aee0e89bfedd # v1
         with:
           ruby-version: ${{ matrix.ruby-version }}
       - name: Run tests
diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 9d991e92c..3c4ed8317 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -28,7 +28,7 @@ jobs:
         code-dir: ["codes/rust", "en/codes/rust"]
 
     steps:
-      - uses: brndnmtthws/rust-action-rustup@v1
+      - uses: brndnmtthws/rust-action-rustup@913349b802fe843511093e8c2014c94d8168c6b6 # v1
         with:
           toolchain: nightly