diff --git a/build.gradle b/build.gradle
index 10bd650044..60df2450f4 100644
--- a/build.gradle
+++ b/build.gradle
@@ -448,7 +448,7 @@ dependencies {
     testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.10.2'
 
     // For mocking features during unit tests
-    testImplementation group: 'org.mockito', name: 'mockito-core', version: '5.10.0'
+    testImplementation group: 'org.mockito', name: 'mockito-core', version: '5.15.2'
 
     // flexmark markdown parsing / conversion
     implementation 'com.vladsch.flexmark:flexmark-all:0.64.8'
diff --git a/clientserver/build.gradle b/clientserver/build.gradle
index 3ee55597d2..c7dc7a53b3 100644
--- a/clientserver/build.gradle
+++ b/clientserver/build.gradle
@@ -39,7 +39,7 @@ dependencies {
     testImplementation 'org.junit.jupiter:junit-jupiter-params:5.10.2'
     testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.10.2'
     // For mocking features during unit tests
-    testImplementation group: 'org.mockito', name: 'mockito-core', version: '5.10.0'
+    testImplementation group: 'org.mockito', name: 'mockito-core', version: '5.15.2'
 }
 
 test {