diff --git a/build.gradle b/build.gradle
index 9262580b..fb19b8c3 100644
--- a/build.gradle
+++ b/build.gradle
@@ -47,7 +47,7 @@ dependencies {
     implementation 'org.apache.commons:commons-lang3:3.12.0'
     implementation 'org.apache.commons:commons-io:1.3.2'
     implementation 'org.freemarker:freemarker:2.3.34'
-    implementation 'org.jfree:jfreechart:1.5.3'
+    implementation 'org.jfree:jfreechart:1.5.6'
 }
 
 sourceSets {