diff --git a/20172018/twitter-manual/bin/src/main/resources/webapp/WEB-INF/classes/META-INF/maven/amu.m2isi.samples/twitter4.3.2/pom.xml b/20172018/twitter-manual/bin/src/main/resources/webapp/WEB-INF/classes/META-INF/maven/amu.m2isi.samples/twitter4.3.2/pom.xml
index 9a91d15..975924e 100644
--- a/20172018/twitter-manual/bin/src/main/resources/webapp/WEB-INF/classes/META-INF/maven/amu.m2isi.samples/twitter4.3.2/pom.xml
+++ b/20172018/twitter-manual/bin/src/main/resources/webapp/WEB-INF/classes/META-INF/maven/amu.m2isi.samples/twitter4.3.2/pom.xml
@@ -8,7 +8,7 @@
 	<name>servlet usage example code</name>
 	<url>http://maven.apache.org</url>
 	<properties>
-		<tomcat.version>8.5.21</tomcat.version>
+		<tomcat.version>8.5.61</tomcat.version>
 	</properties>
 	<dependencies>
 		<dependency>