diff --git a/lib/build.gradle b/lib/build.gradle
index 83093fc1..35e4bce3 100644
--- a/lib/build.gradle
+++ b/lib/build.gradle
@@ -122,8 +122,8 @@ javadoc {
 }
 
 dependencies {
-    implementation 'com.fasterxml.jackson.core:jackson-core:2.15.4'
-    implementation 'com.fasterxml.jackson.core:jackson-databind:2.15.4'
+    implementation 'com.fasterxml.jackson.core:jackson-core:2.21.0'
+    implementation 'com.fasterxml.jackson.core:jackson-databind:2.21.0'
 
     testImplementation 'org.bouncycastle:bcprov-jdk15on:1.70'
     testImplementation 'junit:junit:4.13.2'