diff --git a/.github/workflows/R-CMD-check-devel.yaml b/.github/workflows/R-CMD-check-devel.yaml
deleted file mode 100644
index 8f28a21..0000000
--- a/.github/workflows/R-CMD-check-devel.yaml
+++ /dev/null
@@ -1,94 +0,0 @@
-on:
-  push:
-    branches:
-      - master
-  pull_request:
-    branches:
-      - master
-  schedule:
-    - cron: "0 0 * * FRI"
-
-name: devel
-
-jobs:
-  devel:
-    runs-on: ${{ matrix.config.os }}
-
-    name: ${{ matrix.config.os }} (${{ matrix.config.r }})
-
-    strategy:
-      fail-fast: false
-      matrix:
-        config:
-          - {os: macOS-latest, r: 'devel'}
-
-    env:
-      R_REMOTES_NO_ERRORS_FROM_WARNINGS: true
-      RSPM: ${{ matrix.config.rspm }}
-      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
-
-    steps:
-      - uses: actions/checkout@v2
-
-      - uses: r-lib/actions/setup-r@master
-        with:
-          r-version: ${{ matrix.config.r }}
-
-      - uses: r-lib/actions/setup-pandoc@v1
-
-      - name: Remove .Rprofile
-        run: rm .Rprofile
-
-      - name: Query dependencies
-        run: |
-          install.packages('remotes')
-          saveRDS(remotes::dev_package_deps(dependencies = TRUE), ".github/depends.Rds", version = 2)
-          writeLines(sprintf("R-%i.%i", getRversion()$major, getRversion()$minor), ".github/R-version")
-        shell: Rscript {0}
-
-      - name: Cache R packages
-        if: runner.os != 'Windows'
-        uses: actions/cache@v1
-        with:
-          path: ${{ env.R_LIBS_USER }}
-          key: ${{ runner.os }}-r-${{ matrix.config.r }}-${{ hashFiles('depends.Rds') }}
-          restore-keys: ${{ runner.os }}-r-${{ matrix.config.r }}-
-
-      - name: Install system dependencies
-        if: runner.os == 'Linux'
-        env:
-          RHUB_PLATFORM: linux-x86_64-ubuntu-gcc
-        run: |
-          Rscript -e "remotes::install_github('r-hub/sysreqs')"
-          sysreqs=$(Rscript -e "cat(sysreqs::sysreq_commands('DESCRIPTION'))")
-          sudo -s eval "$sysreqs"
-
-      - name: Install dependencies
-        run: |
-          remotes::install_deps(dependencies = TRUE)
-          remotes::install_cran("rcmdcheck")
-        shell: Rscript {0}
-
-      - name: Install package
-        run: |
-          # install isoreader before check so parallel processing examples work
-          remotes::install_cran("devtools")
-          devtools::install(".", dependencies = FALSE)
-        shell: Rscript {0}
-
-      - name: Check
-        env:
-          _R_CHECK_CRAN_INCOMING_REMOTE_: false
-        run: |
-          # include test_data by removing it from .Rbuildignore
-          cat(stringr::str_subset(readr::read_lines(".Rbuildignore"), "test_data", negate = TRUE), file = ".Rbuildignore", sep = "\n")
-          # run RMD check 
-          rcmdcheck::rcmdcheck(args = c("--no-manual", "--as-cran"), error_on = "warning", check_dir = "check")
-        shell: Rscript {0}
-
-      - name: Upload check results
-        if: failure()
-        uses: actions/upload-artifact@master
-        with:
-          name: ${{ runner.os }}-r${{ matrix.config.r }}-results
-          path: check