diff --git a/config/initializers/acts_as_taggable_on.rb b/config/initializers/acts_as_taggable_on.rb
new file mode 100644
index 000000000..9b0297bfa
--- /dev/null
+++ b/config/initializers/acts_as_taggable_on.rb
@@ -0,0 +1,10 @@
+# Disable the taggings counter cache on tags.
+#
+# Each tagging INSERT/DELETE would otherwise issue
+# `UPDATE tags SET taggings_count = ... WHERE id = ?`, which serialises
+# concurrent label writes on the same tag row and deadlocks under
+# parallel multi-label updates (refer INF-68)
+#
+# Safe because Chatwoot does not read `tags.taggings_count` anywhere;
+# label reports compute counts directly via GROUP BY on taggings.
+ActsAsTaggableOn.tags_counter = false