diff --git a/build.gradle b/build.gradle
index 7576386b71..5d7e698a4b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -234,7 +234,7 @@ subprojects {
 
             // Test dependencies.
             junit: 'junit:junit:4.12',
-            mockito: 'org.mockito:mockito-core:1.9.5',
+            mockito: 'org.mockito:mockito-core:1.10.19',
             truth: 'com.google.truth:truth:0.42',
             guava_testlib: "com.google.guava:guava-testlib:${guavaVersion}",
 
diff --git a/examples/build.gradle b/examples/build.gradle
index 2839833322..e2044c045c 100644
--- a/examples/build.gradle
+++ b/examples/build.gradle
@@ -38,7 +38,7 @@ dependencies {
 
     testImplementation "io.grpc:grpc-testing:${grpcVersion}"
     testImplementation "junit:junit:4.12"
-    testImplementation "org.mockito:mockito-core:1.9.5"
+    testImplementation "org.mockito:mockito-core:1.10.19"
 }
 
 protobuf {
diff --git a/examples/example-gauth/pom.xml b/examples/example-gauth/pom.xml
index 86f8f2c0b5..e8aede6952 100644
--- a/examples/example-gauth/pom.xml
+++ b/examples/example-gauth/pom.xml
@@ -84,7 +84,7 @@
     <dependency>
       <groupId>org.mockito</groupId>
       <artifactId>mockito-core</artifactId>
-      <version>1.9.5</version>
+      <version>1.10.19</version>
       <scope>test</scope>
     </dependency>
   </dependencies>
diff --git a/examples/example-kotlin/build.gradle b/examples/example-kotlin/build.gradle
index 331f936ca1..f504179916 100644
--- a/examples/example-kotlin/build.gradle
+++ b/examples/example-kotlin/build.gradle
@@ -35,7 +35,7 @@ dependencies {
 
     testImplementation "io.grpc:grpc-testing:${grpcVersion}" // gRCP testing utilities
     testImplementation "junit:junit:4.12"
-    testImplementation "org.mockito:mockito-core:1.9.5"
+    testImplementation "org.mockito:mockito-core:1.10.19"
 }
 
 protobuf {
diff --git a/examples/pom.xml b/examples/pom.xml
index 7d638fcd06..1af4bf16a9 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -71,7 +71,7 @@
     <dependency>
       <groupId>org.mockito</groupId>
       <artifactId>mockito-core</artifactId>
-      <version>1.9.5</version>
+      <version>1.10.19</version>
       <scope>test</scope>
     </dependency>
   </dependencies>