diff --git a/examples/rollbar-spring-webmvc/build.gradle b/examples/rollbar-spring-webmvc/build.gradle
index 34337a90..17f4cd04 100644
--- a/examples/rollbar-spring-webmvc/build.gradle
+++ b/examples/rollbar-spring-webmvc/build.gradle
@@ -22,7 +22,7 @@ dependencies {
     implementation 'org.springframework:spring-webmvc:' + springWebmvcVersion
     implementation group: 'javax.servlet', name: 'javax.servlet-api', version: javaxServletVersion
 
-    def tomcatVersion = '8.0.42'
+    def tomcatVersion = '8.5.2'
 
     tomcat "org.apache.tomcat.embed:tomcat-embed-core:${tomcatVersion}",
             "org.apache.tomcat.embed:tomcat-embed-logging-juli:${tomcatVersion}"
diff --git a/examples/rollbar-struts2-spring/build.gradle b/examples/rollbar-struts2-spring/build.gradle
old mode 100755
new mode 100644
index f324e8b8..82db8a8c
--- a/examples/rollbar-struts2-spring/build.gradle
+++ b/examples/rollbar-struts2-spring/build.gradle
@@ -18,7 +18,7 @@ dependencies {
     implementation 'org.apache.struts:struts2-core:2.5.25'
     implementation 'org.apache.struts:struts2-spring-plugin:2.5.25'
 
-    def tomcatVersion = '7.0.57'
+    def tomcatVersion = '8.5.2'
 
     tomcat "org.apache.tomcat.embed:tomcat-embed-core:${tomcatVersion}",
             "org.apache.tomcat.embed:tomcat-embed-logging-juli:${tomcatVersion}"
diff --git a/examples/rollbar-struts2/build.gradle b/examples/rollbar-struts2/build.gradle
old mode 100755
new mode 100644
index caa90366..bcf3917e
--- a/examples/rollbar-struts2/build.gradle
+++ b/examples/rollbar-struts2/build.gradle
@@ -17,7 +17,7 @@ dependencies {
     implementation 'org.apache.struts:struts2-core:2.5.25'
     implementation 'javax.servlet:javax.servlet-api:3.1.0'
 
-    def tomcatVersion = '7.0.57'
+    def tomcatVersion = '8.5.2'
 
     tomcat "org.apache.tomcat.embed:tomcat-embed-core:${tomcatVersion}",
             "org.apache.tomcat.embed:tomcat-embed-logging-juli:${tomcatVersion}"
diff --git a/examples/rollbar-web/build.gradle b/examples/rollbar-web/build.gradle
old mode 100755
new mode 100644
index ea6e8263..158f952d
--- a/examples/rollbar-web/build.gradle
+++ b/examples/rollbar-web/build.gradle
@@ -16,7 +16,7 @@ dependencies {
 
     implementation 'javax.servlet:javax.servlet-api:3.1.0'
 
-    def tomcatVersion = '7.0.57'
+    def tomcatVersion = '8.5.2'
 
     tomcat "org.apache.tomcat.embed:tomcat-embed-core:${tomcatVersion}",
             "org.apache.tomcat.embed:tomcat-embed-logging-juli:${tomcatVersion}"