diff --git a/.github/workflows/pytest.yml b/.github/workflows/pytest.yml
index 3e2fe6d..60713d4 100644
--- a/.github/workflows/pytest.yml
+++ b/.github/workflows/pytest.yml
@@ -1,6 +1,7 @@
 name: pytest
 
 on:
+  workflow_dispatch:
   push:
     branches:
       - main
diff --git a/python/gitea.py b/python/gitea.py
index 8b57fdf..54c7ff0 100644
--- a/python/gitea.py
+++ b/python/gitea.py
@@ -4,10 +4,12 @@ from __future__ import annotations
 
 from dataclasses import dataclass
 from typing import Self
+from urllib.parse import quote
 
 import httpx
 
 DEFAULT_PAGE_SIZE = 100
+EXPECTED_NO_CONTENT = 204
 EXPECTED_CREATED = 201
 EXPECTED_OK = 200
 
@@ -222,6 +224,16 @@ class GiteaClient:
             json=payload,
         )
 
+    def dispatch_workflow(self, *, owner: str, repo: str, workflow_id: str, ref: str) -> None:
+        """Trigger a workflow_dispatch run."""
+        workflow_path = quote(workflow_id, safe="")
+        self._request(
+            "POST",
+            f"/api/v1/repos/{owner}/{repo}/actions/workflows/{workflow_path}/dispatches",
+            expected_statuses={EXPECTED_OK, EXPECTED_NO_CONTENT},
+            json={"ref": ref},
+        )
+
     def list_run_jobs(self, *, owner: str, repo: str, run_id: str | int) -> list[WorkflowJob]:
         """List workflow jobs for a specific run."""
         jobs: list[WorkflowJob] = []
diff --git a/python/gitea_flake_lock.py b/python/gitea_flake_lock.py
index 581438a..c95cbc3 100644
--- a/python/gitea_flake_lock.py
+++ b/python/gitea_flake_lock.py
@@ -14,6 +14,7 @@ DEFAULT_BASE_BRANCH = "main"
 DEFAULT_BRANCH = "automation/update-flake-lock"
 DEFAULT_GITEA_URL = "https://gitea.tmmworkshop.com"
 PR_LABELS = ["dependencies", "automated", "flake_lock_update"]
+PR_CHECK_WORKFLOWS = ["build_systems.yml", "treefmt.yml", "pytest.yml"]
 PR_TITLE = "Update flake.lock"
 PR_BODY = "Automated flake.lock update."
 
@@ -57,6 +58,12 @@ def find_flake_lock_pull_request(client: GiteaClient, *, owner: str, repo: str)
     return pull_requests[0]
 
 
+def dispatch_pull_request_checks(client: GiteaClient, *, owner: str, repo: str, branch: str) -> None:
+    """Dispatch the workflows that normally run for pull requests."""
+    for workflow in PR_CHECK_WORKFLOWS:
+        client.dispatch_workflow(owner=owner, repo=repo, workflow_id=workflow, ref=branch)
+
+
 def has_worktree_changes() -> bool:
     """Return whether `flake.lock` has worktree changes."""
     result = run_cmd(["git", "diff", "--quiet", "--", "flake.lock"], check=False)
@@ -113,6 +120,9 @@ def update(
             branch=branch,
             base=base,
         )
+        # We can remove this if Gitea fixes the following issue:
+        # https://github.com/go-gitea/gitea/issues/33963
+        dispatch_pull_request_checks(client, owner=owner, repo=repo_name, branch=branch)
     typer.echo(pull_request.html_url or f"Pull request #{pull_request.number}")
 
 
diff --git a/tests/test_gitea_flake_lock.py b/tests/test_gitea_flake_lock.py
new file mode 100644
index 0000000..0e75682
--- /dev/null
+++ b/tests/test_gitea_flake_lock.py
@@ -0,0 +1,113 @@
+"""Tests for Gitea flake.lock automation."""
+
+from __future__ import annotations
+
+from python.gitea import PullRequest
+from python.gitea_flake_lock import (
+    PR_CHECK_WORKFLOWS,
+    PR_LABELS,
+    dispatch_pull_request_checks,
+    ensure_flake_lock_pull_request,
+    find_flake_lock_pull_request,
+)
+
+
+def _pull_request(number=1, head_branch="automation/update-flake-lock"):
+    return PullRequest(
+        number=number,
+        title="Update flake.lock",
+        html_url=f"https://gitea.example.test/pulls/{number}",
+        labels=(),
+        head_branch=head_branch,
+        base_branch="main",
+    )
+
+
+class FakeGiteaClient:
+    def __init__(self, pull_requests=None):
+        self.pull_requests = pull_requests or []
+        self.dispatch_calls = []
+        self.list_calls = []
+        self.create_calls = []
+
+    def list_open_pull_requests(self, **kwargs):
+        self.list_calls.append(kwargs)
+        return self.pull_requests
+
+    def create_pull_request(self, **kwargs):
+        self.create_calls.append(kwargs)
+        return _pull_request()
+
+    def dispatch_workflow(self, **kwargs):
+        self.dispatch_calls.append(kwargs)
+
+
+def test_ensure_flake_lock_pull_request_finds_by_branch():
+    pull_request = _pull_request()
+    client = FakeGiteaClient([pull_request])
+
+    result = ensure_flake_lock_pull_request(
+        client,
+        owner="Richie",
+        repo="dotfiles",
+        branch="automation/update-flake-lock",
+        base="main",
+    )
+
+    assert result == pull_request
+    assert client.list_calls == [
+        {"owner": "Richie", "repo": "dotfiles", "head": "automation/update-flake-lock"},
+    ]
+    assert client.create_calls == []
+
+
+def test_ensure_flake_lock_pull_request_creates_with_labels():
+    client = FakeGiteaClient()
+
+    ensure_flake_lock_pull_request(
+        client,
+        owner="Richie",
+        repo="dotfiles",
+        branch="automation/update-flake-lock",
+        base="main",
+    )
+
+    assert client.create_calls == [
+        {
+            "owner": "Richie",
+            "repo": "dotfiles",
+            "title": "Update flake.lock",
+            "body": "Automated flake.lock update.",
+            "head": "automation/update-flake-lock",
+            "base": "main",
+            "labels": PR_LABELS,
+        },
+    ]
+
+
+def test_find_flake_lock_pull_request_finds_by_label():
+    pull_request = _pull_request()
+    client = FakeGiteaClient([pull_request])
+
+    result = find_flake_lock_pull_request(client, owner="Richie", repo="dotfiles")
+
+    assert result == pull_request
+    assert client.list_calls == [
+        {"owner": "Richie", "repo": "dotfiles", "labels": ["flake_lock_update"]},
+    ]
+
+
+def test_dispatch_pull_request_checks_runs_each_workflow():
+    client = FakeGiteaClient()
+
+    dispatch_pull_request_checks(client, owner="Richie", repo="dotfiles", branch="automation/update-flake-lock")
+
+    assert client.dispatch_calls == [
+        {
+            "owner": "Richie",
+            "repo": "dotfiles",
+            "workflow_id": workflow,
+            "ref": "automation/update-flake-lock",
+        }
+        for workflow in PR_CHECK_WORKFLOWS
+    ]