diff --git a/build.gradle b/build.gradle
index 6f8ef6d..88a7a2b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -40,6 +40,7 @@ dependencies {
     implementation group: 'com.fasterxml.jackson.core', name: 'jackson-databind', version: '2.13.4'
     implementation 'com.fasterxml.jackson.datatype:jackson-datatype-jsr310:2.13.4'
     implementation 'com.fasterxml.jackson.datatype:jackson-datatype-jdk8:2.13.4'
+    testImplementation 'org.mockito:mockito-core:4.3.+'
 }
 
 test {