diff --git a/packages/cisco_ios/changelog.yml b/packages/cisco_ios/changelog.yml
index 637e04a5da7..8e0c77b83cf 100644
--- a/packages/cisco_ios/changelog.yml
+++ b/packages/cisco_ios/changelog.yml
@@ -1,4 +1,9 @@
 # newer versions go on top
+- version: "1.26.5"
+  changes:
+    - description: Fix ingest pipeline warnings
+      type: bugfix
+      link: https://github.com/elastic/integrations/pulls/9566
 - version: "1.26.4"
   changes:
     - description: Fix hostname parsing for names that contain '_' underscore characters.
diff --git a/packages/cisco_ios/data_stream/log/elasticsearch/ingest_pipeline/default.yml b/packages/cisco_ios/data_stream/log/elasticsearch/ingest_pipeline/default.yml
index b21428ac3ff..c1c14312834 100644
--- a/packages/cisco_ios/data_stream/log/elasticsearch/ingest_pipeline/default.yml
+++ b/packages/cisco_ios/data_stream/log/elasticsearch/ingest_pipeline/default.yml
@@ -42,7 +42,7 @@ processors:
         CISCO_PRIORITY_MSGCOUNT: '<%{NONNEGINT:log.syslog.priority:long}>(?:%{NONNEGINT:cisco.ios.message_count})?(?:: )?'
         CISCO_TIMESTAMP: '[*]?%{CISCOTIMESTAMP:_temp_.cisco_timestamp}(?: %{CISCO_TZ:_temp_.tz})?'
         CISCO_UPTIME: '[0-9a-zA-Z]+'
-        CISCO_HOSTNAME: '[a-zA-Z][0-9a-zA-Z-_]{0,61}[0-9a-zA-Z]?'
+        CISCO_HOSTNAME: '[a-zA-Z][0-9a-zA-Z_-]{0,61}[0-9a-zA-Z]?'
         CISCO_TZ: '[a-zA-Z]{1,4}'
   - grok:
       field: _temp_.message
diff --git a/packages/cisco_ios/manifest.yml b/packages/cisco_ios/manifest.yml
index 6fe13e6559b..49379e44dce 100644
--- a/packages/cisco_ios/manifest.yml
+++ b/packages/cisco_ios/manifest.yml
@@ -1,7 +1,7 @@
 format_version: "3.0.3"
 name: cisco_ios
 title: Cisco IOS
-version: "1.26.4"
+version: "1.26.5"
 description: Collect logs from Cisco IOS with Elastic Agent.
 type: integration
 categories: