diff --git a/.github/workflows/R-CMD-check-wsl.yaml b/.github/workflows/R-CMD-check-wsl.yaml
index b24a728c..f0244dff 100644
--- a/.github/workflows/R-CMD-check-wsl.yaml
+++ b/.github/workflows/R-CMD-check-wsl.yaml
@@ -37,11 +37,11 @@ jobs:
 
       - uses: actions/checkout@v4
 
-      - uses: r-lib/actions/setup-r@v2.8.2
+      - uses: r-lib/actions/setup-r@v2.8.4
         with:
           r-version: 'release'
           rtools-version: '42'
-      - uses: r-lib/actions/setup-pandoc@v2.8.2
+      - uses: r-lib/actions/setup-pandoc@v2.8.4
 
       - name: Query dependencies
         run: |
diff --git a/.github/workflows/R-CMD-check.yaml b/.github/workflows/R-CMD-check.yaml
index 1ff60668..9e22daf0 100644
--- a/.github/workflows/R-CMD-check.yaml
+++ b/.github/workflows/R-CMD-check.yaml
@@ -57,11 +57,11 @@ jobs:
           sudo apt-get install -y libcurl4-openssl-dev || true
           sudo apt-get install -y openmpi-bin openmpi-common libopenmpi-dev || true
 
-      - uses: r-lib/actions/setup-r@v2.8.2
+      - uses: r-lib/actions/setup-r@v2.8.4
         with:
           r-version: ${{ matrix.config.r }}
           rtools-version: ${{ matrix.config.rtools }}
-      - uses: r-lib/actions/setup-pandoc@v2.8.2
+      - uses: r-lib/actions/setup-pandoc@v2.8.4
 
       - name: Query dependencies
         run: |
diff --git a/.github/workflows/Test-coverage.yaml b/.github/workflows/Test-coverage.yaml
index 69c19fdc..428e9e6e 100644
--- a/.github/workflows/Test-coverage.yaml
+++ b/.github/workflows/Test-coverage.yaml
@@ -34,8 +34,8 @@ jobs:
         if: "!startsWith(github.ref, 'refs/tags/') && github.ref != 'refs/heads/master'"
       - uses: actions/checkout@v4
 
-      - uses: r-lib/actions/setup-r@v2.8.2
-      - uses: r-lib/actions/setup-pandoc@v2.8.2
+      - uses: r-lib/actions/setup-r@v2.8.4
+      - uses: r-lib/actions/setup-pandoc@v2.8.4
 
       - name: Install Ubuntu dependencies
         run: |
@@ -85,12 +85,12 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - uses: r-lib/actions/setup-r@v2.8.2
+      - uses: r-lib/actions/setup-r@v2.8.4
         with:
           r-version: 'release'
           rtools-version: '42'
 
-      - uses: r-lib/actions/setup-pandoc@v2.8.2
+      - uses: r-lib/actions/setup-pandoc@v2.8.4
 
       - name: Query dependencies
         run: |
diff --git a/.github/workflows/cmdstan-tarball-check.yaml b/.github/workflows/cmdstan-tarball-check.yaml
index fd995436..57769447 100644
--- a/.github/workflows/cmdstan-tarball-check.yaml
+++ b/.github/workflows/cmdstan-tarball-check.yaml
@@ -40,12 +40,12 @@ jobs:
           sudo apt-get install -y libcurl4-openssl-dev || true
           sudo apt-get install -y openmpi-bin openmpi-common libopenmpi-dev || true
 
-      - uses: r-lib/actions/setup-r@v2.8.2
+      - uses: r-lib/actions/setup-r@v2.8.4
         with:
           r-version: ${{ matrix.config.r }}
           rtools-version: ${{ matrix.config.rtools }}
 
-      - uses: r-lib/actions/setup-pandoc@v2.8.2
+      - uses: r-lib/actions/setup-pandoc@v2.8.4
 
       - name: Query dependencies
         run: |