diff --git a/bom/pom.xml b/bom/pom.xml
index b5a3d28885..06aae38575 100644
--- a/bom/pom.xml
+++ b/bom/pom.xml
@@ -275,7 +275,7 @@ THE SOFTWARE.
       <dependency>
         <groupId>org.jenkins-ci</groupId>
         <artifactId>task-reactor</artifactId>
-        <version>1.8</version>
+        <version>1.9</version>
       </dependency>
       <dependency>
         <groupId>org.jenkins-ci</groupId>
diff --git a/war/pom.xml b/war/pom.xml
index cfc66b2566..a758f0735e 100644
--- a/war/pom.xml
+++ b/war/pom.xml
@@ -158,6 +158,7 @@ THE SOFTWARE.
                     <exclude>org.jenkins-ci.main:websocket-spi</exclude>
                     <exclude>org.jenkins-ci:memory-monitor</exclude>
                     <exclude>org.jenkins-ci:symbol-annotation</exclude>
+                    <exclude>org.jenkins-ci:task-reactor</exclude>
                     <exclude>org.jvnet.hudson:commons-jelly-tags-define</exclude>
                     <exclude>org.jvnet.winp:winp</exclude>
                     <exclude>org.kohsuke:access-modifier-annotation</exclude>