diff --git a/Privileged-Extension/build.gradle b/Privileged-Extension/build.gradle
index 407ad7998..eb43a9731 100644
--- a/Privileged-Extension/build.gradle
+++ b/Privileged-Extension/build.gradle
@@ -36,7 +36,7 @@ android {
 }
 
 checkstyle {
-    toolVersion = '7.0'
+    toolVersion = '7.1'
 }
 
 task checkstyle(type: Checkstyle) {
diff --git a/app/build.gradle b/app/build.gradle
index 381e47366..40108ac53 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -41,7 +41,7 @@ dependencies {
 
     testCompile 'junit:junit:4.12'
 
-    testCompile "org.robolectric:robolectric:3.1"
+    testCompile "org.robolectric:robolectric:3.1.1"
 
     testCompile "org.mockito:mockito-core:1.10.19"
 
@@ -209,7 +209,7 @@ android {
 }
 
 checkstyle {
-    toolVersion = '7.0'
+    toolVersion = '7.1'
 }
 
 task checkstyle(type: Checkstyle) {
@@ -221,7 +221,7 @@ task checkstyle(type: Checkstyle) {
 }
 
 pmd {
-    toolVersion = '5.5.0'
+    toolVersion = '5.5.1'
     consoleOutput = true
 }