diff --git a/.github/workflows/update-python-dependencies.yaml b/.github/workflows/update-python-dependencies.yaml
index d6f1707..2f9465e 100644
--- a/.github/workflows/update-python-dependencies.yaml
+++ b/.github/workflows/update-python-dependencies.yaml
@@ -234,7 +234,17 @@ jobs:
       - name: ⏳ Wait for prek hooks
         wait: install-hooks
       - name: 📑 Stage dependency changes
-        run: git add --all
+        run: |
+          set -euo pipefail
+          while read -r lock; do
+            # Nab stamps created-at on every run; a lock that differs only there carries no dependency change.
+            real=$(git diff -U0 --no-color -- "$lock" | grep -cvE '^(\+\+\+|---|@@|diff |index )|^[-+]created-at = |^ ' || true)
+            if [[ "$real" == 0 ]]; then
+              git checkout -- "$lock"
+              echo "Lock change dropped: only created-at moved in $lock"
+            fi
+          done < <(git diff --name-only -- '*pylock*.toml')
+          git add --all
       - id: hooks
         name: 🧹 Run repository hooks
         continue-on-error: true
diff --git a/changelog.d/+timestamp-only-locks.bugfix.md b/changelog.d/+timestamp-only-locks.bugfix.md
new file mode 100644
index 0000000..e93a6ea
--- /dev/null
+++ b/changelog.d/+timestamp-only-locks.bugfix.md
@@ -0,0 +1,2 @@
+Maintenance pull requests are no longer opened when a refreshed Nab lock differs from the committed one only in its
+`created-at` timestamp.
diff --git a/github_workflows.egg-info/PKG-INFO b/github_workflows.egg-info/PKG-INFO
new file mode 100644
index 0000000..126d47b
--- /dev/null
+++ b/github_workflows.egg-info/PKG-INFO
@@ -0,0 +1,8 @@
+Metadata-Version: 2.4
+Name: github-workflows
+Version: 0.0.0
+Summary: Shared release actions for tox-dev repositories
+License-Expression: MIT
+Requires-Python: >=3.15
+License-File: LICENSE
+Dynamic: license-file
diff --git a/github_workflows.egg-info/SOURCES.txt b/github_workflows.egg-info/SOURCES.txt
new file mode 100644
index 0000000..d1957d0
--- /dev/null
+++ b/github_workflows.egg-info/SOURCES.txt
@@ -0,0 +1,8 @@
+LICENSE
+README.md
+pyproject.toml
+github_workflows.egg-info/PKG-INFO
+github_workflows.egg-info/SOURCES.txt
+github_workflows.egg-info/dependency_links.txt
+github_workflows.egg-info/top_level.txt
+tests/test_conftest.py
diff --git a/github_workflows.egg-info/dependency_links.txt b/github_workflows.egg-info/dependency_links.txt
new file mode 100644
index 0000000..e69de29
diff --git a/github_workflows.egg-info/top_level.txt b/github_workflows.egg-info/top_level.txt
new file mode 100644
index 0000000..e69de29
diff --git a/refresh-release-lock/action.yml b/refresh-release-lock/action.yml
index 496aa7e..21d4c10 100644
--- a/refresh-release-lock/action.yml
+++ b/refresh-release-lock/action.yml
@@ -162,6 +162,17 @@ runs:
         else
           echo 'Secondary lock skipped: additional-lock input is empty'
         fi
+        if [[ "$MODE" != check ]]; then
+          for lock in "${paths[@]}"; do
+            git diff --quiet -- "$lock" && continue
+            # Nab stamps created-at on every run; a lock that differs only there carries no dependency change.
+            real=$(git diff -U0 --no-color -- "$lock" | grep -cvE '^(\+\+\+|---|@@|diff |index )|^[-+]created-at = |^ ' || true)
+            if [[ "$real" == 0 ]]; then
+              git checkout -- "$lock"
+              echo "Lock change dropped: only created-at moved in $lock"
+            fi
+          done
+        fi
         if [[ "$MODE" == check ]]; then
           if ! git diff --exit-code -- "${paths[@]}"; then
             echo "::error::regenerated locks differ from the checkout: ${paths[*]}" >&2