diff --git a/.github/workflows/make-live.yml b/.github/workflows/make-live.yml
index 093b0912..d10d0a2c 100644
--- a/.github/workflows/make-live.yml
+++ b/.github/workflows/make-live.yml
@@ -8,14 +8,14 @@ on:
       rendering:
         description: Should rendering be completed? TRUE or FALSE
         required: true
-        default: 'TRUE'
+        default: "TRUE"
 
 jobs:
   make-live:
     # The type of runner that the job will run on
     runs-on: ubuntu-latest
     container:
-      image: ccdl/training_dev:latest
+      image: ccdl/training_rstudio:edge
 
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
@@ -59,7 +59,7 @@ jobs:
           signoff: false
           branch: auto_render_live
           delete-branch: true
-          title: 'GHA: Automated live (rendered) versions of the notebooks'
+          title: "GHA: Automated live (rendered) versions of the notebooks"
           body: |
             ### Description:
             This PR auto-generated from github actions running make-live.R with:
@@ -73,7 +73,6 @@ jobs:
             automated
           reviewers: $GITHUB_ACTOR
 
-
       # Write PR info
       - name: Check outputs
         run: |
diff --git a/.github/workflows/render-rmds.yml b/.github/workflows/render-rmds.yml
index 0cae09e7..3b3cd56c 100644
--- a/.github/workflows/render-rmds.yml
+++ b/.github/workflows/render-rmds.yml
@@ -17,7 +17,7 @@ jobs:
   test-render:
     runs-on: ubuntu-latest
     container:
-      image: ccdl/training_dev:latest
+      image: ccdl/training_rstudio:edge
 
     steps:
       - name: Checkout code
diff --git a/.github/workflows/spell-check.yml b/.github/workflows/spell-check.yml
index 739b6739..9b313fb3 100644
--- a/.github/workflows/spell-check.yml
+++ b/.github/workflows/spell-check.yml
@@ -1,42 +1,43 @@
-
 name: Spell check R Markdown and Markdown files
 
-# Controls when the action will run.
-# Pull requests to master only.
 on:
   pull_request:
     branches:
       - master
 
-# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+concurrency:
+  # only one run per branch at a time
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
-  # This workflow contains a single job called "spell check"
-  spell-check:
+  spellcheck:
     runs-on: ubuntu-latest
-    container:
-      image: rocker/tidyverse:4.2.3
+    name: Spell check files
+    permissions:
+      contents: read
+      issues: write
 
-    # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
-      - uses: actions/checkout@v3
-
-      - name: Install packages
-        run: Rscript --vanilla -e "install.packages(c('spelling'), repos = c(CRAN = '$CRAN'))"
+      - name: Checkout
+        uses: actions/checkout@v4
 
-      - name: Run spell check
-        id: spell_check_run
-        run: |
-          results=$(Rscript --vanilla "scripts/spell-check.R")
-          echo "sp_chk_results=$results" >> $GITHUB_OUTPUT
-          cat spell_check_errors.tsv
+      - name: Spell check action
+        uses: alexslemonade/spellcheck@v0
+        id: spell
+        with:
+          dictionary: components/dictionary.txt
 
-      - name: Archive spelling errors
-        uses: actions/upload-artifact@v3
+      - name: Upload spell check errors
+        uses: actions/upload-artifact@v4
+        id: artifact-upload-step
         with:
-          name: spell-check-results
+          name: spell_check_errors
           path: spell_check_errors.tsv
 
-      # If there are too many spelling errors, this will stop the workflow
-      - name: Check spell check results - fail if too many errors
-        if: ${{ steps.spell_check_run.outputs.sp_chk_results > 0 }}
-        run: exit 1
+      - name: Fail if there are spelling errors
+        if: steps.spell.outputs.error_count > 0
+        run: |
+          echo "There were ${{ steps.spell.outputs.error_count }} errors"
+          column -t spell_check_errors.tsv
+          exit 1
diff --git a/components/dictionary.txt b/components/dictionary.txt
index 27e678ff..3379690a 100644
--- a/components/dictionary.txt
+++ b/components/dictionary.txt
@@ -1,4 +1,5 @@
 ʹ
+⚠️
 Adelie
 ADT
 ADTs
@@ -80,9 +81,9 @@ Danio
 Darmanis
 DataFrames
 dataset
+de
 deconvolution
 deconvolved
-de
 dendritic
 DESeq
 DESeq2
@@ -92,6 +93,7 @@ DGE
 digoxin
 DIPG
 directionality
+discoverable
 dispersions
 displaystyle
 DocToc
@@ -109,6 +111,7 @@ embryonal
 emptyDrops
 ENA
 endothelium
+enforceability
 Enricher
 Ensdb
 Ensembl
@@ -145,6 +148,7 @@ GBM
 GC
 GeneCard
 GeneCards
+generis
 geo
 GG
 ggplot
@@ -185,10 +189,12 @@ HPCA
 https
 HVGs
 ICb
+ies
 IgG
 IgSF
 Illumina
 imap
+immunities
 immunohistochemical
 immunophenotypic
 immunostaining
@@ -218,6 +224,9 @@ Lafzi
 LFC
 LGLs
 Liberzon
+licensor
+licensor's
+licensors
 linkedTxome
 lncRNAs
 loadings
@@ -243,6 +252,7 @@ medulloblastoma
 MEK
 Menyhárt
 mer
+merchantability
 mesenchymal
 mesoderm
 metacell
@@ -353,6 +363,7 @@ RAS
 rds
 Reactome
 README
+redistributions
 redux
 relevel
 renv
@@ -415,7 +426,8 @@ summarization
 SummarizedExperiment
 symlinked
 symlinks
-Τ
+synched
+T
 Tabula
 Tamayo
 TBD
@@ -465,6 +477,7 @@ VST
 Wattenberg
 Wickham
 Wickham's
+WIPO
 WNT
 xenograft
 Yu