diff --git a/build.gradle b/build.gradle
index 625858a07..6690570d6 100644
--- a/build.gradle
+++ b/build.gradle
@@ -127,7 +127,7 @@ allprojects  {
             dependency 'org.apache.commons:commons-email:1.5'
             dependency 'commons-io:commons-io:2.11.0'
             dependency 'com.github.librepdf:openpdf:1.3.27'
-            dependency 'org.mnode.ical4j:ical4j:3.1.1'
+            dependency 'org.mnode.ical4j:ical4j:3.1.3'
             dependency 'org.quartz-scheduler:quartz:2.3.2'
             dependency 'com.amazonaws:aws-java-sdk-s3:1.12.172'
             dependency 'org.ehcache:ehcache:3.9.9'