diff --git a/scripts/generate_miro_image_suppressions_table.py b/scripts/generate_miro_image_suppressions_table.py
deleted file mode 100755
index 26058c17d2..0000000000
--- a/scripts/generate_miro_image_suppressions_table.py
+++ /dev/null
@@ -1,45 +0,0 @@
-import contextlib
-import os
-import subprocess
-import tempfile
-
-from _common import git, get_secret_string
-
-
-@contextlib.contextmanager
-def working_directory(path):
-    """
-    Changes the working directory to the given path, then returns to the
-    original directory when done.
-    """
-    prev_cwd = os.getcwd()
-    os.chdir(path)
-    try:
-        yield
-    finally:
-        os.chdir(prev_cwd)
-
-
-@contextlib.contextmanager
-def cloned_repo(git_url):
-    """
-    Clones the repository and changes the working directory to the cloned
-    repo.  Cleans up the clone when it's done.
-    """
-    with tempfile.TemporaryDirectory() as repo_dir:
-        git(
-            "clone",
-            git_url,
-            repo_dir,
-            stdout=subprocess.DEVNULL,
-            stderr=subprocess.DEVNULL,
-        )
-
-        with working_directory(repo_dir):
-            yield
-
-
-def get_github_api_key(sess):
-    return get_secret_string(
-        sess, secret_id="builds/github_wecobot/scala_libs_pr_bumps"
-    )
diff --git a/scripts/miro_updates.py b/scripts/miro_updates.py
index e6a4e8a180..20c73763b0 100644
--- a/scripts/miro_updates.py
+++ b/scripts/miro_updates.py
@@ -5,10 +5,10 @@
 
 import datetime
 import functools
-import itertools
 import json
 import sys
 import re
+import os
 
 import boto3
 import httpx
@@ -22,7 +22,6 @@
     get_date_from_index_name,
     get_dynamodb_items,
 )
-from generate_miro_image_suppressions_table import cloned_repo, get_github_api_key
 
 SESSION = get_session(role_arn="arn:aws:iam::760097843905:role/platform-developer")
 DYNAMO_CLIENT = SESSION.resource("dynamodb").meta.client
@@ -408,77 +407,17 @@ def get_all_miro_suppression_events():
 
 
 def update_miro_image_suppressions_doc():
-    print("*** Updating the list of Miro image suppressions...")
-    api_key = get_github_api_key(SESSION)
-
-    client = httpx.Client(
-        auth=("weco-bot", api_key),
-        event_hooks={"response": [lambda r: r.raise_for_status()]},
+    print(
+        "*** Creating a workflow_dispatch event for update_miro_suppressions_doc.yml in repo wellcomecollection/private ***"
     )
 
-    with cloned_repo("git@github.com:wellcomecollection/private.git"):
-        with open("miro-suppressions.md", "w") as outfile:
-            today = datetime.date.today()
-
-            outfile.write("# Miro image suppressions\n\n")
-            outfile.write(f"Last updated {today.strftime('%-d %B %Y')}\n")
-            outfile.write(
-                "Note: this file is autogenerated by a script in the catalogue-pipeline repo; any manual edits will be overwritten.\n\n"
-            )
-
-            outfile.write("<table>\n")
-            outfile.write("<tr>\n")
-            outfile.write("  <th>Miro ID</th>\n")
-            outfile.write("  <th>Suppression date</th>\n")
-            outfile.write("  <th>Reason</th>\n")
-            outfile.write("</tr>\n")
-
-            for (date, message), events in itertools.groupby(
-                sorted(
-                    get_all_miro_suppression_events(),
-                    key=lambda e: e["date"],
-                    reverse=True,
-                ),
-                key=lambda e: (e["date"].date(), e["message"]),
-            ):
-                outfile.write("<tr>\n")
-                outfile.write(f'  <td>{"<br>".join(ev["id"] for ev in events)}</td>\n')
-                outfile.write(f'  <td>{date.strftime("%-d %B %Y")}</td>\n')
-                outfile.write(f"  <td>{message}\n")
-                outfile.write("</tr>\n")
-
-            outfile.write("</table>\n")
-
-        branch_name = f"miro-suppressions-{today.strftime('%Y-%m-%d')}"
-
-        git("checkout", "-b", branch_name)
-        git("add", "miro-suppressions.md")
-        git("commit", "-m", "update miro-suppressions.md")
-        git("push", "origin", branch_name, "--force", "--quiet")
-
-        r = client.post(
-            "https://api.github.com/repos/wellcomecollection/private/pulls",
-            headers={"Accept": "application/vnd.github+json"},
-            json={
-                "head": branch_name,
-                "base": "main",
-                "title": f"Update miro-suppressions.md for {today.strftime('%-d %B %Y')}",
-                "maintainer_can_modify": True,
-                "body": f"This is an auto-generated update of the Miro suppressions table.\n\nView rendered version: https://github.com/wellcomecollection/private/blob/{branch_name}/miro-suppressions.md",
-            },
-        )
-
-        new_pr_number = r.json()["number"]
-
-        r = client.post(
-            f"https://api.github.com/repos/wellcomecollection/private/pulls/{new_pr_number}/requested_reviewers",
-            headers={"Accept": "application/vnd.github.v3+json"},
-            json={"team_reviewers": ["developers"]},
-        )
-
-        print(
-            f"*** To approve these changes, visit https://github.com/wellcomecollection/private/pull/{new_pr_number}"
-        )
+    # create a workflow_dispatch event to trigger the update_miro_suppressions_doc.yml workflow
+    # the Github CLI is required
+    os.system(
+        f"gh workflow run update_miro_suppressions_doc.yml "
+        f"--repo wellcomecollection/private "
+        f"--field committer='{git('config', 'user.name')} <{git('config', 'user.email')}>'"
+    )
 
 
 def register_on_dlcs(origin_url, miro_id):