diff --git a/.github/workflows/R-CMD-check.yaml b/.github/workflows/R-CMD-check.yaml
index 423a5bb4..f5d52602 100644
--- a/.github/workflows/R-CMD-check.yaml
+++ b/.github/workflows/R-CMD-check.yaml
@@ -10,63 +10,41 @@ jobs:
   R-CMD-check:
     runs-on: ${{ matrix.config.os }}
 
-    name: ${{ matrix.config.os }} (${{ matrix.config.r }} - ${{ matrix.config.rust-version }})
+    name: "${{ matrix.config.os }} (R: ${{ matrix.config.r }}, Rust: ${{ matrix.config.rust }})"
 
     strategy:
       fail-fast: false
       matrix:
         config:
-          - {os: windows-latest, r: 'release', rust-version: 'stable-msvc', rust-target: 'x86_64-pc-windows-gnu' }
-          - {os: windows-latest, r: 'devel',   rust-version: 'stable-msvc', rust-target: 'x86_64-pc-windows-gnu' }
-          - {os: windows-latest, r: 'oldrel',  rust-version: 'stable-msvc', rust-target: 'x86_64-pc-windows-gnu', rtools-version: '42' }
-
-          - {os: macOS-latest,   r: 'release', rust-version: 'stable' }
-
-          - {os: ubuntu-latest,  r: 'release', rust-version: 'stable' }
-          - {os: ubuntu-latest,  r: 'devel',   rust-version: 'stable' }
-          - {os: ubuntu-latest,  r: 'oldrel',  rust-version: 'stable' }
+          - {os: windows-latest, r: 'release', rust: 'stable-msvc' }
+          - {os: windows-latest, r: 'devel',   rust: 'stable-msvc' }
+          - {os: macOS-latest,   r: 'release', rust: 'stable'      }
+          - {os: ubuntu-latest,  r: 'release', rust: 'stable'      }
+          - {os: ubuntu-latest,  r: 'devel',   rust: 'stable'      }
 
     env:
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
       R_KEEP_PKG_SOURCE: yes
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - uses: r-lib/actions/setup-pandoc@v2
 
       - uses: dtolnay/rust-toolchain@master
         with:
-          toolchain: ${{ matrix.config.rust-version }}
-          targets: ${{ matrix.config.rust-target }}
-
-      - uses: baptiste0928/cargo-install@v2
-        if: matrix.config.r == 'release'
-        with:
-          crate: cargo-license
+          toolchain: ${{ matrix.config.rust }}
 
       - uses: r-lib/actions/setup-r@v2
         with:
           r-version: ${{ matrix.config.r }}
           rtools-version: ${{ matrix.config.rtools-version }}
+          use-public-rspm: true
 
       - uses: r-lib/actions/setup-r-dependencies@v2
         with:
           cache-version: 2
-          extra-packages: rcmdcheck
-
-      # TODO: allow warnings on oldrel (cf., https://stat.ethz.ch/pipermail/r-package-devel/2023q2/009229.html)
-      - name: Check R version
-        id: error-on
-        run: |
-          output <- Sys.getenv("GITHUB_OUTPUT")
-          if (.Platform$OS.type == "windows" && getRversion() < "4.3.0") {
-            cat('level=error', file = output, append = TRUE)
-          } else {
-            cat('level=warning', file = output, append = TRUE)
-          }
-        shell: Rscript {0}
+          extra-packages: any::rcmdcheck
+          needs: check
 
       - uses: r-lib/actions/check-r-package@v2
-        with:
-          error-on: '"${{ steps.error-on.outputs.level }}"'