diff --git a/.gitignore b/.gitignore
index 8292ebd7..ed988dab 100644
--- a/.gitignore
+++ b/.gitignore
@@ -33,7 +33,7 @@ gradle/wrapper/gradlew*
 syncthing/go
 syncthing/go.tgz
 syncthing/go.zip
-syncthing/android-ndk-r16b
+syncthing/android-ndk-r*
 syncthing/ndk.zip
 
 # External build artifacts
diff --git a/app/build.gradle b/app/build.gradle
index 949e6e31..a6718670 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -4,14 +4,14 @@ apply plugin: 'com.github.triplet.play'
 
 dependencies {
     implementation 'eu.chainfire:libsuperuser:1.0.0.201704021214'
-    implementation 'com.android.support:design:27.0.2'
+    implementation 'com.android.support:design:27.1.1'
     implementation 'com.google.zxing:android-integration:3.3.0'
     implementation 'com.google.code.gson:gson:2.8.2'
     implementation 'org.mindrot:jbcrypt:0.4'
     implementation 'com.google.guava:guava:23.6-android'
     implementation 'com.annimon:stream:1.1.9'
     implementation 'com.android.volley:volley:1.1.0'
-    implementation 'com.android.support.constraint:constraint-layout:1.1.2'
+    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
     implementation 'com.google.dagger:dagger:2.14.1'
     annotationProcessor "com.google.dagger:dagger-compiler:2.14.1"
     androidTestImplementation 'com.android.support.test:rules:1.0.2'
@@ -21,7 +21,7 @@ dependencies {
 android {
     // Changes to these values need to be reflected in `.travis.yml`
     compileSdkVersion 27
-    buildToolsVersion '27.0.3'
+    buildToolsVersion '28.0.2'
 
     buildTypes.debug.applicationIdSuffix ".debug"
     dataBinding.enabled = true
diff --git a/app/src/main/res/drawable-hdpi/ic_settings_white_24dp.png b/app/src/main/res/drawable-hdpi/ic_settings_white_24dp.png
new file mode 100644
index 00000000..836237d1
Binary files /dev/null and b/app/src/main/res/drawable-hdpi/ic_settings_white_24dp.png differ
diff --git a/app/src/main/res/drawable-mdpi/ic_settings_white_24dp.png b/app/src/main/res/drawable-mdpi/ic_settings_white_24dp.png
new file mode 100644
index 00000000..38f841e3
Binary files /dev/null and b/app/src/main/res/drawable-mdpi/ic_settings_white_24dp.png differ
diff --git a/app/src/main/res/drawable-xhdpi/ic_settings_white_24dp.png b/app/src/main/res/drawable-xhdpi/ic_settings_white_24dp.png
new file mode 100644
index 00000000..10f0d15d
Binary files /dev/null and b/app/src/main/res/drawable-xhdpi/ic_settings_white_24dp.png differ
diff --git a/app/src/main/res/drawable-xxhdpi/ic_settings_white_24dp.png b/app/src/main/res/drawable-xxhdpi/ic_settings_white_24dp.png
new file mode 100644
index 00000000..7ef944db
Binary files /dev/null and b/app/src/main/res/drawable-xxhdpi/ic_settings_white_24dp.png differ
diff --git a/app/src/main/res/drawable-xxxhdpi/ic_settings_white_24dp.png b/app/src/main/res/drawable-xxxhdpi/ic_settings_white_24dp.png
index 76b5dbad..56d5d9fc 100644
Binary files a/app/src/main/res/drawable-xxxhdpi/ic_settings_white_24dp.png and b/app/src/main/res/drawable-xxxhdpi/ic_settings_white_24dp.png differ
diff --git a/build.gradle b/build.gradle
index 3a8103da..4653bbbd 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,7 +6,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.1.3'
+        classpath 'com.android.tools.build:gradle:3.1.4'
         classpath 'com.github.triplet.gradle:play-publisher:1.2.0'
         classpath 'com.github.ben-manes:gradle-versions-plugin:0.15.0'
 
diff --git a/syncthing/build-syncthing.py b/syncthing/build-syncthing.py
index d162868d..6c959cfd 100644
--- a/syncthing/build-syncthing.py
+++ b/syncthing/build-syncthing.py
@@ -136,12 +136,12 @@ def install_ndk():
     # Consts.
     pwd_path = os.path.dirname(os.path.realpath(__file__))
     if sys.platform == 'win32':
-        url =               'https://dl.google.com/android/repository/android-ndk-r16b-windows-x86_64.zip'
-        expected_shasum =   'f3f1909ed1052e98dda2c79d11c22f3da28daf25'
+        url =               'https://dl.google.com/android/repository/android-ndk-r18-windows-x86_64.zip'
+        expected_shasum =   '7fc0e0f94d86ea389bd18761abdc1bae2c005587'
 
     else:
-        url =               'https://dl.google.com/android/repository/android-ndk-r16b-linux-x86_64.zip'
-        expected_shasum =   '42aa43aae89a50d1c66c3f9fdecd676936da6128'
+        url =               'https://dl.google.com/android/repository/android-ndk-r18-linux-x86_64.zip'
+        expected_shasum =   '2ac2e8e1ef73ed551cac3a1479bb28bd49369212'
 
     zip_fullfn = pwd_path + os.path.sep + 'ndk.zip';
     # Download NDK.
@@ -161,10 +161,10 @@ def install_ndk():
     print("[ok] Checksum of", zip_fullfn, "matches expected value.")
 
     # Proceed with extraction of the NDK if necessary.
-    ndk_home_path = pwd_path + os.path.sep + 'android-ndk-r16b'
+    ndk_home_path = pwd_path + os.path.sep + 'android-ndk-r18'
     if not os.path.isfile(ndk_home_path + os.path.sep + "sysroot" + os.path.sep + "NOTICE"):
         print("Extracting NDK ...")
-        # This will go to a subfolder "android-ndk-r16b" in the current path.
+        # This will go to a subfolder "android-ndk-r18" in the current path.
         file_name, file_extension = os.path.splitext(url_base_name)
         zip = zipfile.ZipFile(zip_fullfn, 'r')
         zip.extractall(pwd_path)