diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 9fddc63..4c57cd2 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -101,7 +101,7 @@ jobs:
         with:
           distribution: temurin
           java-version: 17
-      - uses: gradle/actions/setup-gradle@3f131e8634966bd73d06cc69884922b02e6faf92 # v6.2.0
+      - uses: gradle/actions/setup-gradle@9c971963bec38e04b3d30dcc455b5382be2fdbfb # v6.3.0
       # K/N ツールチェーンと platform libs（Apple 系 klib のクロスコンパイルを含む）
       - uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
@@ -122,7 +122,7 @@ jobs:
         with:
           distribution: temurin
           java-version: 17
-      - uses: gradle/actions/setup-gradle@3f131e8634966bd73d06cc69884922b02e6faf92 # v6.2.0
+      - uses: gradle/actions/setup-gradle@9c971963bec38e04b3d30dcc455b5382be2fdbfb # v6.3.0
       - uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           path: ~/.konan
@@ -149,7 +149,7 @@ jobs:
         with:
           distribution: temurin
           java-version: 17
-      - uses: gradle/actions/setup-gradle@3f131e8634966bd73d06cc69884922b02e6faf92 # v6.2.0
+      - uses: gradle/actions/setup-gradle@9c971963bec38e04b3d30dcc455b5382be2fdbfb # v6.3.0
       - uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           path: ~/.konan
@@ -174,7 +174,7 @@ jobs:
         with:
           distribution: temurin
           java-version: 17
-      - uses: gradle/actions/setup-gradle@3f131e8634966bd73d06cc69884922b02e6faf92 # v6.2.0
+      - uses: gradle/actions/setup-gradle@9c971963bec38e04b3d30dcc455b5382be2fdbfb # v6.3.0
       - uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           path: integration-test/maven-integration/build/maven-local-repo
@@ -194,7 +194,7 @@ jobs:
         with:
           distribution: temurin
           java-version: 17
-      - uses: gradle/actions/setup-gradle@3f131e8634966bd73d06cc69884922b02e6faf92 # v6.2.0
+      - uses: gradle/actions/setup-gradle@9c971963bec38e04b3d30dcc455b5382be2fdbfb # v6.3.0
       - uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           path: ~/.konan
@@ -212,7 +212,7 @@ jobs:
         with:
           distribution: temurin
           java-version: 17
-      - uses: gradle/actions/setup-gradle@3f131e8634966bd73d06cc69884922b02e6faf92 # v6.2.0
+      - uses: gradle/actions/setup-gradle@9c971963bec38e04b3d30dcc455b5382be2fdbfb # v6.3.0
       - uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           path: ~/.konan
@@ -234,7 +234,7 @@ jobs:
         with:
           distribution: temurin
           java-version: 17
-      - uses: gradle/actions/setup-gradle@3f131e8634966bd73d06cc69884922b02e6faf92 # v6.2.0
+      - uses: gradle/actions/setup-gradle@9c971963bec38e04b3d30dcc455b5382be2fdbfb # v6.3.0
       - run: ./gradlew :checkVersionMentions
 
   # 必須チェックはこの 1 本へ集約する（docs/チェックリスト.md §8 R-6）。