diff --git a/.github/workflows/README.md b/.github/workflows/README.md
index 9cf40d3..2a90d78 100644
--- a/.github/workflows/README.md
+++ b/.github/workflows/README.md
@@ -4,5 +4,4 @@
 - build.yaml - Build and push docker container images to a docker registry
 - conda-lock-command.yml - Refresh conda-lock files by writing `/condalock` in a Pull Request comment
 - retag.yml - Republish docker images originally tagged with a short hash using a new CalVer string
-- slash-command-dispatch.yml - ChatOps that looks for slash commands in Pull Requests to trigger automated scripts
 - test.yaml - Test building docker container images in a Pull Request
diff --git a/.github/workflows/conda-lock-command.yml b/.github/workflows/conda-lock-command.yml
index 587f32a..f887158 100644
--- a/.github/workflows/conda-lock-command.yml
+++ b/.github/workflows/conda-lock-command.yml
@@ -1,18 +1,18 @@
 # Runs conda-lock against environment.yml for reproducible environments
-# Runs on any opened PR
+# Runs on Pull Request comments starting with /condalock
 name: Conda Lock
 
 on:
-  repository_dispatch:
-    types: [condalock-command]
-
-permissions:  # added using https://github.com/step-security/secure-workflows
-  contents: read
+  issue_comment:
+    types: [created]
 
 jobs:
   condalock:
+    # Only run on Pull Requests, when a comment with '/condalock' is made
+    if: github.event.issue.pull_request && startsWith(github.event.comment.body, '/condalock')
     permissions:
-      contents: write  # for Git to git push
+      contents: write  # to git push added/changed files
+      pull-requests: write  # for adding reactions to pull request comments
     runs-on: ubuntu-latest
     timeout-minutes: 15
     defaults:
@@ -27,45 +27,50 @@ jobs:
           app_id: ${{ secrets.APP_ID }}
           private_key: ${{ secrets.APP_PRIVATE_KEY }}
 
-      # Checkout the pull request branch
-      - name: Checkout Repository
-        uses: actions/checkout@v3
+      # Add an emoji reaction to comment to indicate the script is starting
+      - name: Add reaction
+        uses: peter-evans/create-or-update-comment@v3
         with:
           token: ${{ steps.generate-token.outputs.token }}
-          repository: ${{ github.event.client_payload.pull_request.head.repo.full_name }}
-          ref: ${{ github.event.client_payload.pull_request.head.ref }}
+          repository: ${{ github.event.client_payload.github.payload.repository.full_name }}
+          comment-id: ${{ github.event.comment.id }}
+          reactions: eyes
 
-      # Setup Python environment
-      - uses: actions/setup-python@v4
+      # Checkout the git repository
+      - name: Checkout repository
+        uses: actions/checkout@v3
         with:
-          python-version: '3.10'
+          token: ${{ steps.generate-token.outputs.token }}
 
-      # Install conda-lock library
-      # HACK: Temporarily pin urllib3<2 to resolve incompatibilities:
-      #       https://github.com/ionrock/cachecontrol/issues/292
-      - name: Install conda-lock
-        run: 'pip install conda-lock "urllib3<2"'
+      # Switch to pull request branch
+      # https://github.com/actions/checkout/issues/331#issuecomment-925405415
+      - name: Switch to Pull Request branch
+        run: hub pr checkout ${{ github.event.issue.number }}
+        env:
+          GITHUB_TOKEN: ${{ steps.generate-token.outputs.token }}
 
-      # Run "conda-lock" for linux-64 only
-      - name: Run conda-lock
-        run: |
-          conda-lock lock --mamba --kind explicit --file environment.yml --platform linux-64
+      # Add an emoji reaction to comment to indicate that conda-lock is starting
+      - name: Add reaction
+        uses: peter-evans/create-or-update-comment@v3
+        with:
+          token: ${{ steps.generate-token.outputs.token }}
+          repository: ${{ github.event.client_payload.github.payload.repository.full_name }}
+          comment-id: ${{ github.event.comment.id }}
+          reactions: rocket
 
-      # Commit the change to the PR branch if any changes
-      - name: Commit condalock files to PR
-        run: |
-          if [[ $(git ls-files --modified --others) ]]; then
-            git config --global user.name 'actions-bot'
-            git config --global user.email '58130806+actions-bot@users.noreply.github.com'
-            git commit --all --message "[condalock-command] autogenerated conda-lock files"
-            git push
-          fi
+      # Run conda-lock GitHub Action
+      - name: Run conda-lock
+        uses: weiji14/conda-lock-refresh@f021e17844c28aabfdb41c0ded96448043a8d2b5 # v0.1.0
+        with:
+          file: "environment.yml"
+          kind: "explicit"
+          platform: "linux-64"
 
       # Add an emoji reaction to comment to indicate the script completed successfully
       - name: Add reaction
-        uses: peter-evans/create-or-update-comment@v2
+        uses: peter-evans/create-or-update-comment@v3
         with:
           token: ${{ steps.generate-token.outputs.token }}
           repository: ${{ github.event.client_payload.github.payload.repository.full_name }}
-          comment-id: ${{ github.event.client_payload.github.payload.comment.id }}
-          reaction-type: hooray
+          comment-id: ${{ github.event.comment.id }}
+          reactions: hooray
diff --git a/.github/workflows/slash-command-dispatch.yml b/.github/workflows/slash-command-dispatch.yml
deleted file mode 100644
index c16ca89..0000000
--- a/.github/workflows/slash-command-dispatch.yml
+++ /dev/null
@@ -1,34 +0,0 @@
-name: Slash Command Dispatch
-
-on:
-  issue_comment:
-    types: [created]
-    # Add "edited" type for test purposes. Where possible, avoid using to prevent processing unnecessary events.
-    # types: [created, edited]
-
-permissions:  # added using https://github.com/step-security/secure-workflows
-  contents: read
-
-jobs:
-  slashCommandDispatch:
-    permissions:
-      pull-requests: write  # for peter-evans/slash-command-dispatch to create PR reaction
-    if: ${{ github.event.issue.pull_request }}
-    runs-on: ubuntu-latest
-    steps:
-      # Generate token from CryoInTheCloud bot
-      - uses: tibdex/github-app-token@v1
-        id: generate-token
-        with:
-          app_id: ${{ secrets.APP_ID }}
-          private_key: ${{ secrets.APP_PRIVATE_KEY }}
-
-      - name: Slash Command Dispatch
-        uses: peter-evans/slash-command-dispatch@v3
-        with:
-          token: ${{ steps.generate-token.outputs.token }}
-          reaction-token: ${{ secrets.GITHUB_TOKEN }}
-          commands: |
-            condalock
-          issue-type: pull-request
-          permission: none