diff --git a/cs_misp_import/importer.py b/cs_misp_import/importer.py
index 74ab55a..f653586 100644
--- a/cs_misp_import/importer.py
+++ b/cs_misp_import/importer.py
@@ -212,12 +212,12 @@ def remove_crowdstrike_tags(self):
                        fallback="BEGIN DELETE",
                        hide_cool_banners=self.import_settings["no_banners"]
                        )
-        # self.log.info(DELETE_BANNER)
         removed = 0
-        self.log.info("Retrieving list of tags to remove from MISP instance")
+        self.log.info("Retrieving list of tags to remove from MISP instance (may take several minutes).")
+        lock = Lock()
         with concurrent.futures.ThreadPoolExecutor(self.misp_client.thread_count, thread_name_prefix="thread") as executor:
             futures = {
-                executor.submit(self.misp_client.clear_tag, tg)
+                executor.submit(self.misp_client.clear_tag, tg, lock)
                 for tg in self.misp_client.search_tags("CrowdStrike:%", strict_tagname=True)
             }
             for _ in concurrent.futures.as_completed(futures):
diff --git a/cs_misp_import/threaded_misp.py b/cs_misp_import/threaded_misp.py
index 9edc374..c2ade7d 100644
--- a/cs_misp_import/threaded_misp.py
+++ b/cs_misp_import/threaded_misp.py
@@ -101,16 +101,34 @@ def get_cs_tags(self):
         return self.search_tags("CrowdStrike:%", strict_tagname=True)
         
     def clear_tag(self, *args, **kwargs):
-#        tags = self.search_tags("CrowdStrike:%")
-        #for tag in kwargstags:
-        tag = args[0]
-        if tag:
+        def perform_tag_clear():
             if not self.deleted_tag_count % 50 and self.deleted_tag_count:
                 self.log.info("%i tags deleted", self.deleted_tag_count, extra={"key": ""})
             result = self._retry(self.delete_tag, tag, **kwargs)
             if "errors" not in result:
                 self.deleted_tag_count += 1
 
+        thread_lock = kwargs.get("lock", None)
+        if thread_lock:
+            kwargs.pop("lock")
+        tag = args[0]
+        if tag:
+            if thread_lock:
+                with thread_lock:
+                    perform_tag_clear()
+                    # if not self.deleted_tag_count % 50 and self.deleted_tag_count:
+                    #     self.log.info("%i tags deleted", self.deleted_tag_count, extra={"key": ""})
+                    # result = self._retry(self.delete_tag, tag, **kwargs)
+                    # if "errors" not in result:
+                    #     self.deleted_tag_count += 1
+            else:
+                perform_tag_clear()
+                # if not self.deleted_tag_count % 50 and self.deleted_tag_count:
+                #     self.log.info("%i tags deleted", self.deleted_tag_count, extra={"key": ""})
+                # result = self._retry(self.delete_tag, tag, **kwargs)
+                # if "errors" not in result:
+                #     self.deleted_tag_count += 1
+
         return self.deleted_tag_count
         #self.log.info("%i tags deleted", self.deleted_tag_count)