diff --git a/app/build.gradle b/app/build.gradle
index ab592cb..b06138c 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -3,8 +3,8 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 23
-    buildToolsVersion "23.0.2"
+    compileSdkVersion 26
+    buildToolsVersion "26.0.0"
 
     defaultConfig {
         applicationId "net.named_data.nfd"
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
new file mode 100644
index 0000000..314d8a4
--- /dev/null
+++ b/app/proguard-rules.pro
@@ -0,0 +1,8 @@
+# The simpliest strategy is to not run proguard against your project's own code.
+# This doesn't provide the benefits of optimization & obfuscation against your
+# project, but will still strip the libraries. The advantage is that your app will
+# work without any subsequent effort. If you choose this strategy, the proguard
+# configuration for the project is simply the line below.
+
+# -keep class net.named_data.nfd.** { * ; }
+# -keep class net.named_data.jndn.** { * ; }