diff --git a/.github/workflows/lock.yml b/.github/workflows/lock.yml
index 914771c1b5..4a4d2057db 100644
--- a/.github/workflows/lock.yml
+++ b/.github/workflows/lock.yml
@@ -5,6 +5,10 @@ on:
     - cron: '0 6 * * *'
   workflow_dispatch:
 
+concurrency:
+  group: close-old-threads
+  cancel-in-progress: false
+
 permissions:
   issues: write
   pull-requests: write
@@ -23,23 +27,48 @@ jobs:
             const cutoff = new Date();
             cutoff.setDate(cutoff.getDate() - cutoffDays);
 
-            const closeIssueMessage = `This issue has been automatically closed and locked.
-
-            Processing 3.x is no longer actively developed. Since January 2020, development moved to the Processing 4 repository.
-
-            If this issue is still relevant to Processing 4, we'd love to hear from you. Please open a new issue at:
-            https://github.com/processing/processing4/issues/new/choose
-
-            Thank you for helping improve Processing.`;
-
-            const closePrMessage = `This pull request has been automatically closed and locked.
-
-            Processing 3.x is no longer actively developed. Since January 2020, development moved to the Processing 4 repository.
-
-            If you'd still like to contribute this work, please open an issue in the Processing 4 repository to discuss it first:
-            https://github.com/processing/processing4/issues/new/choose
+            const closeIssueMessage = [
+              'This issue has been automatically closed and locked.',
+              '',
+              'Processing 3.x is no longer actively developed. Since January 2020, development moved to the Processing 4 repository.',
+              '',
+              "If this issue is still relevant to Processing 4, we'd love to hear from you. Please open a new issue at:",
+              'https://github.com/processing/processing4/issues/new/choose',
+              '',
+              'Thank you for helping improve Processing.'
+            ].join('\n');
+
+            const closePrMessage = [
+              'This pull request has been automatically closed and locked.',
+              '',
+              'Processing 3.x is no longer actively developed. Since January 2020, development moved to the Processing 4 repository.',
+              '',
+              "If you'd still like to contribute this work, please open an issue in the Processing 4 repository to discuss it first:",
+              'https://github.com/processing/processing4/issues/new/choose',
+              '',
+              'Thank you for your contribution.'
+            ].join('\n');
+
+            async function closeThread(thread) {
+              const isPr = Boolean(thread.pull_request);
 
-            Thank you for your contribution.`;
+              if (isPr) {
+                await github.rest.pulls.update({
+                  owner: context.repo.owner,
+                  repo: context.repo.repo,
+                  pull_number: thread.number,
+                  state: 'closed'
+                });
+              } else {
+                await github.rest.issues.update({
+                  owner: context.repo.owner,
+                  repo: context.repo.repo,
+                  issue_number: thread.number,
+                  state: 'closed',
+                  state_reason: 'not_planned'
+                });
+              }
+            }
 
             const threads = await github.paginate(github.rest.issues.listForRepo, {
               owner: context.repo.owner,
@@ -51,41 +80,50 @@ jobs:
             });
 
             for (const thread of threads) {
-              const updatedAt = new Date(thread.updated_at);
-
-              if (updatedAt > cutoff) {
-                continue;
-              }
-
-              const labels = thread.labels.map(label => label.name);
-              const isExempt = labels.some(label => exemptLabels.includes(label));
-
-              if (isExempt) {
-                continue;
+              try {
+                const updatedAt = new Date(thread.updated_at);
+
+                if (updatedAt > cutoff) {
+                  break;
+                }
+
+                const labels = thread.labels.map(label =>
+                  typeof label === 'string' ? label : label.name
+                );
+
+                const isExempt = labels.some(label => exemptLabels.includes(label));
+
+                if (isExempt) {
+                  console.log(`Skipping #${thread.number}: exempt label.`);
+                  continue;
+                }
+
+                const isPr = Boolean(thread.pull_request);
+                const body = isPr ? closePrMessage : closeIssueMessage;
+
+                await closeThread(thread);
+
+                if (thread.locked) {
+                  console.log(`Closed #${thread.number}: already locked, so no comment was added.`);
+                  continue;
+                }
+
+                await github.rest.issues.createComment({
+                  owner: context.repo.owner,
+                  repo: context.repo.repo,
+                  issue_number: thread.number,
+                  body
+                });
+
+                await github.rest.issues.lock({
+                  owner: context.repo.owner,
+                  repo: context.repo.repo,
+                  issue_number: thread.number,
+                  lock_reason: 'resolved'
+                });
+
+                console.log(`Closed and locked #${thread.number}.`);
+              } catch (error) {
+                console.log(`Failed on #${thread.number}: ${error.status || 'unknown status'} ${error.message}`);
               }
-
-              const isPr = Boolean(thread.pull_request);
-              const body = isPr ? closePrMessage : closeIssueMessage;
-
-              await github.rest.issues.createComment({
-                owner: context.repo.owner,
-                repo: context.repo.repo,
-                issue_number: thread.number,
-                body
-              });
-
-              await github.rest.issues.update({
-                owner: context.repo.owner,
-                repo: context.repo.repo,
-                issue_number: thread.number,
-                state: 'closed',
-                state_reason: 'not_planned'
-              });
-
-              await github.rest.issues.lock({
-                owner: context.repo.owner,
-                repo: context.repo.repo,
-                issue_number: thread.number,
-                lock_reason: 'resolved'
-              });
             }
diff --git a/.github/workflows/redirect.yml b/.github/workflows/redirect.yml
new file mode 100644
index 0000000000..ff55bb9e64
--- /dev/null
+++ b/.github/workflows/redirect.yml
@@ -0,0 +1,37 @@
+name: Redirect issues to Processing 4
+
+on:
+  issues:
+    types: [opened]
+
+permissions:
+  issues: write
+
+jobs:
+  redirect:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/github-script@v9
+        with:
+          script: |
+            const body = `> Thanks for your report. Please note that this repository is inactive and only kept for legacy purposes.
+            >
+            > If you're reporting a bug or requesting a feature for Processing 4, please open an issue in **https://github.com/processing/processing4/issues/new/choose** instead.
+            >
+            > This issue will be closed automatically.`;
+
+            await github.rest.issues.createComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body
+            });
+
+            await github.rest.issues.update({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              state: "closed",
+              state_reason: "not_planned"
+            });