From fcd8cd0afe719343d5c686ad2caa715383f78244 Mon Sep 17 00:00:00 2001
From: ASF Logging Services RM <private@logging.apache.org>
Date: Fri, 31 Oct 2025 21:10:34 +0000
Subject: [PATCH] Update `ch.qos.logback:logback-core` to version `1.3.16`
 (#3977)

---
 log4j-parent/pom.xml                                      | 2 +-
 pom.xml                                                   | 2 +-
 .../.2.x.x/update_ch_qos_logback_logback_core.xml         | 8 ++++++++
 3 files changed, 10 insertions(+), 2 deletions(-)
 create mode 100644 src/changelog/.2.x.x/update_ch_qos_logback_logback_core.xml

diff --git a/log4j-parent/pom.xml b/log4j-parent/pom.xml
index 6328ac4c9b0..96674b007a4 100644
--- a/log4j-parent/pom.xml
+++ b/log4j-parent/pom.xml
@@ -119,7 +119,7 @@
     <log4j-transform.version>0.2.0</log4j-transform.version>
     <log4j2-cachefile-transformer.version>2.15.0</log4j2-cachefile-transformer.version>
     <log4j2-ecs-layout.version>1.7.0</log4j2-ecs-layout.version>
-    <logback.version>1.3.15</logback.version>
+    <logback.version>1.3.16</logback.version>
     <maven.version>3.9.10</maven.version>
     <mockito.version>4.11.0</mockito.version>
     <nashorn.version>15.6</nashorn.version>
diff --git a/pom.xml b/pom.xml
index b3c1385c7ad..56d1986d2b7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -351,7 +351,7 @@
     <site-je.version>18.3.12</site-je.version>
     <site-jeromq.version>0.6.0</site-jeromq.version>
     <site-kafka.version>3.9.1</site-kafka.version>
-    <site-logback.version>1.3.15</site-logback.version>
+    <site-logback.version>1.3.16</site-logback.version>
     <site-slf4j.version>2.0.17</site-slf4j.version>
 
     <!-- =====================================================
diff --git a/src/changelog/.2.x.x/update_ch_qos_logback_logback_core.xml b/src/changelog/.2.x.x/update_ch_qos_logback_logback_core.xml
new file mode 100644
index 00000000000..423c57601c5
--- /dev/null
+++ b/src/changelog/.2.x.x/update_ch_qos_logback_logback_core.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<entry xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xmlns="https://logging.apache.org/xml/ns"
+       xsi:schemaLocation="https://logging.apache.org/xml/ns https://logging.apache.org/xml/ns/log4j-changelog-0.xsd"
+       type="updated">
+  <issue id="3977" link="https://github.com/apache/logging-log4j2/pull/3977"/>
+  <description format="asciidoc">Update `ch.qos.logback:logback-core` to version `1.3.16`</description>
+</entry>