diff --git a/.github/workflows/R-CMD-check.yaml b/.github/workflows/R-CMD-check.yaml
index 0cd2d77..9c887b9 100644
--- a/.github/workflows/R-CMD-check.yaml
+++ b/.github/workflows/R-CMD-check.yaml
@@ -20,9 +20,9 @@ jobs:
         config:
           - {os: macOS-latest,   r: 'release'}
           - {os: windows-latest, r: 'release'}
-          - {os: ubuntu-20.04,   r: 'devel', rspm: "https://packagemanager.rstudio.com/cran/__linux__/focal/latest", http-user-agent: "R/4.0.0 (ubuntu-16.04) R (4.0.0 x86_64-pc-linux-gnu x86_64 linux-gnu) on GitHub Actions" }
-          - {os: ubuntu-20.04,   r: 'release', rspm: "https://packagemanager.rstudio.com/cran/__linux__/focal/latest"}
-          - {os: ubuntu-20.04,   r: 'oldrel',  rspm: "https://packagemanager.rstudio.com/cran/__linux__/focal/latest"}
+          - {os: ubuntu-latest,   r: 'devel', rspm: "https://packagemanager.rstudio.com/cran/__linux__/jammy/latest", http-user-agent: "R/devel (ubuntu-122.04) on GitHub Actions" }
+          - {os: ubuntu-latest,   r: 'release', rspm: "https://packagemanager.rstudio.com/cran/__linux__/jammy/latest"}
+          - {os: ubuntu-latest,   r: 'oldrel',  rspm: "https://packagemanager.rstudio.com/cran/__linux__/jammy/latest"}
 
     env:
       R_REMOTES_NO_ERRORS_FROM_WARNINGS: true
@@ -30,7 +30,7 @@ jobs:
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v5
 
       - uses: r-lib/actions/setup-r@v2
         with:
@@ -48,7 +48,7 @@ jobs:
 
       - name: Cache R packages
         if: runner.os != 'Windows'
-        uses: actions/cache@v1
+        uses: actions/cache@v5
         with:
           path: ${{ env.R_LIBS_USER }}
           key: ${{ runner.os }}-${{ hashFiles('.github/R-version') }}-1-${{ hashFiles('.github/depends.Rds') }}
@@ -57,10 +57,11 @@ jobs:
       - name: Install system dependencies
         if: runner.os == 'Linux'
         run: |
+          sudo apt install libcurl4-openssl-dev
           while read -r cmd
           do
             eval sudo $cmd
-          done < <(Rscript -e 'writeLines(remotes::system_requirements("ubuntu", "16.04"))')
+          done < <(Rscript -e 'writeLines(remotes::system_requirements("ubuntu", "22.04"))')
 
       - name: Install dependencies
         run: |
diff --git a/cran-comments.md b/cran-comments.md
index e80b303..7819bd3 100644
--- a/cran-comments.md
+++ b/cran-comments.md
@@ -1,14 +1,14 @@
-Also includes a fix for the @doctype isseu (now documenting "_PACKAGE" instead of NULL).
-
 ## Test environments
 
-* ubuntu 22.04 (devel, release, old-rel)
-* macOS X (release)
-* Windows Server 2019 (release)
+* ubuntu 20.04 (devel, release, old-rel)
+* macOS 14.7.2 (release)
+* Windows Server 2022 (release)
 * CRAN win builder (devel)
 
 ## Check status summary
 
-                  NOTE OK
-  Source packages    0  1
-  Reverse depends   19  3
+We checked 19 reverse dependencies (1 from CRAN + 18 from Bioconductor), 
+comparing R CMD check results across CRAN and dev versions of this package.
+
+ * We saw 0 new problems
+ * We failed to check 0 packages