diff --git a/.github/workflows/nebula.yml b/.github/workflows/nebula.yml
index 4bd8eb5..58b8de3 100644
--- a/.github/workflows/nebula.yml
+++ b/.github/workflows/nebula.yml
@@ -13,7 +13,7 @@ jobs:
     name: "Gradle Wrapper Validation"
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: gradle/wrapper-validation-action@v1
   buildmultijdk:
     if: (!startsWith(github.ref, 'refs/tags/v'))
@@ -25,7 +25,7 @@ jobs:
         java: [8, 17, 21]
     name: Gradle Build without Publish
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v4
       - name: Setup git user
         run: |
           git config --global user.name "Nebula Plugin Maintainers"
@@ -65,7 +65,7 @@ jobs:
       NETFLIX_OSS_SONATYPE_USERNAME: ${{ secrets.ORG_SONATYPE_USERNAME }}
       NETFLIX_OSS_SONATYPE_PASSWORD: ${{ secrets.ORG_SONATYPE_PASSWORD }}
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v4
       - name: Setup git user
         run: |
           git config --global user.name "Nebula Plugin Maintainers"
@@ -110,7 +110,7 @@ jobs:
       NETFLIX_OSS_REPO_USERNAME: ${{ secrets.ORG_NETFLIXOSS_USERNAME }}
       NETFLIX_OSS_REPO_PASSWORD: ${{ secrets.ORG_NETFLIXOSS_PASSWORD }}
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v4
       - name: Setup git user
         run: |
           git config --global user.name "Nebula Plugin Maintainers"
diff --git a/build.gradle b/build.gradle
index 9a854b5..3b90ac9 100644
--- a/build.gradle
+++ b/build.gradle
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 plugins {
-    id 'com.netflix.nebula.plugin-plugin' version '21.2.2'
+    id 'com.netflix.nebula.plugin-plugin' version '21.3.3'
 }
 
 description = 'Allows projects to leave off version numbers in dependencies section and have versions recommended by other sources'