diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
deleted file mode 100644
index 8c4ab0a..0000000
--- a/.github/workflows/ci.yml
+++ /dev/null
@@ -1,41 +0,0 @@
-# This workflow uses actions that are not certified by GitHub.
-# They are provided by a third-party and are governed by
-# separate terms of service, privacy policy, and support
-# documentation.
-#
-# See https://github.com/r-lib/actions/tree/master/examples#readme for
-# additional example workflows available for the R community.
-
-name: R CI 
-
-on: [push, pull_request]
-
-env:
-  cntr: uscbiostats/fmcmc:latest
-
-jobs:
-  build:
-    runs-on: Ubuntu-latest
-    strategy:
-      matrix:
-        include:
-        - name: release
-          cmd: R
-        - name: dev
-          cmd: RD
-
-    steps:
-      - uses: actions/checkout@v2
-
-      - name: Container
-        run: docker pull uscbiostats/fmcmc:latest
-
-      - name: SessionInfo
-        run: docker run --rm -i -v ${PWD}:/mnt -w /mnt uscbiostats/fmcmc:latest ${{ matrix.cmd }} -q -e 'sessionInfo()'
-
-      - name: Build
-        run: docker run --rm -i -v ${PWD}:/mnt -w /mnt uscbiostats/fmcmc:latest ${{ matrix.cmd }} CMD build --no-build-vignettes --no-manual .
-
-      - name: Check
-        run: docker run --rm -i -v ${PWD}:/mnt -w /mnt -e CI=true uscbiostats/fmcmc:latest ${{ matrix.cmd }} CMD check --no-vignettes --no-manual fmcmc_*.tar.gz
-
diff --git a/.github/workflows/r.yml b/.github/workflows/r.yml
index 40a685d..840da9e 100644
--- a/.github/workflows/r.yml
+++ b/.github/workflows/r.yml
@@ -24,8 +24,8 @@ jobs:
         config:
           - {os: windows-latest, r: 'release'}
           - {os: macOS-latest, r: 'release'}
-          - {os: ubuntu-20.04, r: 'release', rspm: "https://packagemanager.rstudio.com/cran/__linux__/focal/latest"}
-          - {os: ubuntu-20.04, r: 'devel', rspm: "https://packagemanager.rstudio.com/cran/__linux__/focal/latest"}
+          - {os: ubuntu-latest, r: 'release', rspm: "https://packagemanager.rstudio.com/cran/__linux__/focal/latest"}
+          - {os: ubuntu-latest, r: 'devel', rspm: "https://packagemanager.rstudio.com/cran/__linux__/focal/latest"}
 
     env:
       R_REMOTES_NO_ERRORS_FROM_WARNINGS: true