diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index f40b8cb7..345312f2 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -15,7 +15,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: r-lib/actions/setup-r@v2 # https://github.com/r-lib/actions/issues/374
       - uses: r-lib/actions/setup-pandoc@v1
         with:
@@ -44,7 +44,7 @@ jobs:
         shell: Rscript {0}
 
       - name: Cache R Packages
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         with:
           path: ${{ env.R_LIBS_USER }}
           key: ${{ hashFiles('.github/R-version') }}-${{ hashFiles('.github/pkg-versions.Rds') }}-${{ hashFiles('.github/pkg-deps.Rds') }}
@@ -62,7 +62,7 @@ jobs:
         shell: Rscript {0}
 
       - name: Cache Build Artifacts
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         with:
           path: /tmp/_posts
           key: ${{ hashFiles('.github/pandoc-version') }}-${{ hashFiles('.github/R-version') }}-${{ hashFiles('.github/pkg-versions.Rds') }}-${{ hashFiles('.github/pkg-deps.Rds') }}
@@ -118,7 +118,7 @@ jobs:
           mkdir ai-blog-preview
           mv docs ai-blog-preview/ai-blog-preview
       - name: Upload Preview Directory as GitHub Artifact
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         if: github.ref != 'refs/heads/main'
         with:
           name: ai-blog-preview