diff --git a/appengine-java11/kotlin-ktor/pom.xml b/appengine-java11/kotlin-ktor/pom.xml
index 37e59550c06..3890d02ce08 100644
--- a/appengine-java11/kotlin-ktor/pom.xml
+++ b/appengine-java11/kotlin-ktor/pom.xml
@@ -79,7 +79,7 @@ limitations under the License.
     <dependency>
       <groupId>ch.qos.logback</groupId>
       <artifactId>logback-classic</artifactId>
-      <version>1.3.0-alpha10</version>
+      <version>1.5.25</version>
     </dependency>
     <dependency>
       <groupId>io.ktor</groupId>