diff --git a/.github/workflows/lock.yaml b/.github/workflows/lock.yaml
index e19cdb71..1677663f 100644
--- a/.github/workflows/lock.yaml
+++ b/.github/workflows/lock.yaml
@@ -1,8 +1,9 @@
-name: 'Lock threads'
-# Lock closed issues that have not received any further activity for
-# two weeks. This does not close open issues, only humans may do that.
-# We find that it is easier to respond to new issues with fresh examples
-# rather than continuing discussions on old issues.
+name: Lock inactive closed issues
+# Lock closed issues that have not received any further activity for two weeks.
+# This does not close open issues, only humans may do that. It is easier to
+# respond to new issues with fresh examples rather than continuing discussions
+# on old issues.
+
 on:
   schedule:
     - cron: '0 0 * * *'
@@ -15,7 +16,8 @@ jobs:
   lock:
     runs-on: ubuntu-latest
     steps:
-      - uses: dessant/lock-threads@7de207be1d3ce97a9abe6ff1306222982d1ca9f9
+      - uses: dessant/lock-threads@7de207be1d3ce97a9abe6ff1306222982d1ca9f9 # v5.0.1
         with:
           issue-inactive-days: 14
           pr-inactive-days: 14
+          discussion-inactive-days: 14