diff --git a/app/build.gradle b/app/build.gradle
index 63f5585fc..c8b4474b1 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -114,6 +114,7 @@ checkstyle {
 configurations {
     all*.exclude group: 'com.google.guava', module: 'guava-jdk5'
     all*.exclude group: 'org.apache.httpcomponents', module: 'httpclient'
+    all*.exclude group: 'com.google.http-client', module: 'google-http-client-apache'
 }
 
 final DAGGER_VERSION = '2.22.1'
@@ -135,7 +136,7 @@ dependencies {
     implementation "androidx.room:room-rxjava2:${ROOM_VERSION}"
     annotationProcessor "androidx.room:room-compiler:${ROOM_VERSION}"
     implementation "androidx.lifecycle:lifecycle-extensions:2.0.0"
-    implementation "io.reactivex.rxjava2:rxandroid:2.1.0"
+    implementation "io.reactivex.rxjava2:rxandroid:2.1.1"
     implementation "androidx.paging:paging-runtime:2.1.0"
 
     annotationProcessor "com.jakewharton:butterknife-compiler:${BUTTERKNIFE_VERSION}"
@@ -161,7 +162,7 @@ dependencies {
     implementation 'androidx.cardview:cardview:1.0.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.0.0-alpha3'
     implementation 'com.jakewharton.timber:timber:4.7.1'
-    implementation 'com.jakewharton.threetenabp:threetenabp:1.1.0'
+    implementation 'com.jakewharton.threetenabp:threetenabp:1.2.0'
     //noinspection GradleDependency
     implementation 'com.google.guava:guava:27.1-android'
     implementation 'com.jakewharton:process-phoenix:2.0.0'
@@ -175,12 +176,12 @@ dependencies {
     }
     implementation('com.wdullaer:materialdatetimepicker:4.0.1')
     implementation "me.leolin:ShortcutBadger:1.1.22@aar"
-    implementation 'com.google.apis:google-api-services-tasks:v1-rev55-1.25.0'
-    implementation 'com.google.apis:google-api-services-drive:v3-rev136-1.25.0'
-    implementation 'com.google.api-client:google-api-client-android:1.27.0'
+    implementation 'com.google.apis:google-api-services-tasks:v1-rev58-1.25.0'
+    implementation 'com.google.apis:google-api-services-drive:v3-rev159-1.25.0'
+    implementation 'com.google.api-client:google-api-client-android:1.28.0'
     implementation "androidx.work:work-runtime:${WORK_VERSION}"
     implementation 'com.mapbox.mapboxsdk:mapbox-android-sdk:7.3.0'
-    implementation'com.mapbox.mapboxsdk:mapbox-sdk-services:4.5.0'
+    implementation'com.mapbox.mapboxsdk:mapbox-sdk-services:4.6.0'
     implementation 'com.google.auth:google-auth-library-oauth2-http:0.15.0'
 
     googleplayImplementation "com.crashlytics.sdk.android:crashlytics:${CRASHLYTICS_VERSION}"
@@ -188,7 +189,7 @@ dependencies {
     googleplayImplementation "com.google.android.gms:play-services-location:16.0.0"
     googleplayImplementation 'com.google.android.gms:play-services-maps:16.1.0'
     googleplayImplementation 'com.google.android.libraries.places:places:1.1.0'
-    googleplayImplementation 'com.android.billingclient:billing:1.2.1'
+    googleplayImplementation 'com.android.billingclient:billing:1.2.2'
 
     amazonImplementation fileTree(dir: 'libs', include: ['*.jar'])
     amazonImplementation "com.crashlytics.sdk.android:crashlytics:${CRASHLYTICS_VERSION}"
diff --git a/app/src/main/assets/licenses.json b/app/src/main/assets/licenses.json
index 6839c3a95..1ea33dbef 100644
--- a/app/src/main/assets/licenses.json
+++ b/app/src/main/assets/licenses.json
@@ -93,7 +93,7 @@
       "artifactId": {
         "name": "google-api-services-drive",
         "group": "com.google.apis",
-        "version": "v3-rev136-1.25.0"
+        "version": "v3-rev159-1.25.0"
       }
     },
     {
@@ -141,7 +141,7 @@
       "artifactId": {
         "name": "mapbox-sdk-services",
         "group": "com.mapbox.mapboxsdk",
-        "version": "4.5.0"
+        "version": "4.6.0"
       }
     },
     {
@@ -653,7 +653,7 @@
       "artifactId": {
         "name": "mapbox-sdk-geojson",
         "group": "com.mapbox.mapboxsdk",
-        "version": "4.5.0"
+        "version": "4.6.0"
       }
     },
     {
@@ -749,7 +749,7 @@
       "artifactId": {
         "name": "rxandroid",
         "group": "io.reactivex.rxjava2",
-        "version": "2.1.0"
+        "version": "2.1.1"
       }
     },
     {
@@ -765,7 +765,7 @@
       "artifactId": {
         "name": "threetenbp",
         "group": "org.threeten",
-        "version": "1.3.6"
+        "version": "1.3.8"
       }
     },
     {
@@ -813,7 +813,7 @@
       "artifactId": {
         "name": "google-api-client-android",
         "group": "com.google.api-client",
-        "version": "1.27.0"
+        "version": "1.28.0"
       }
     },
     {
@@ -1197,7 +1197,7 @@
       "artifactId": {
         "name": "mapbox-sdk-core",
         "group": "com.mapbox.mapboxsdk",
-        "version": "4.5.0"
+        "version": "4.6.0"
       }
     },
     {
@@ -1245,7 +1245,7 @@
       "artifactId": {
         "name": "threetenabp",
         "group": "com.jakewharton.threetenabp",
-        "version": "1.1.0"
+        "version": "1.2.0"
       }
     },
     {
@@ -1373,7 +1373,7 @@
       "artifactId": {
         "name": "google-oauth-client",
         "group": "com.google.oauth-client",
-        "version": "1.27.0"
+        "version": "1.28.0"
       }
     },
     {
@@ -1453,7 +1453,7 @@
       "artifactId": {
         "name": "rxjava",
         "group": "io.reactivex.rxjava2",
-        "version": "2.2.0"
+        "version": "2.2.6"
       }
     },
     {
@@ -1469,7 +1469,7 @@
       "artifactId": {
         "name": "google-api-services-tasks",
         "group": "com.google.apis",
-        "version": "v1-rev55-1.25.0"
+        "version": "v1-rev58-1.25.0"
       }
     },
     {
@@ -1485,7 +1485,7 @@
       "artifactId": {
         "name": "google-api-client",
         "group": "com.google.api-client",
-        "version": "1.27.0"
+        "version": "1.28.0"
       }
     },
     {
@@ -1581,7 +1581,7 @@
       "artifactId": {
         "name": "google-http-client-android",
         "group": "com.google.http-client",
-        "version": "1.27.0"
+        "version": "1.28.0"
       }
     },
     {
@@ -1597,7 +1597,7 @@
       "artifactId": {
         "name": "okhttp",
         "group": "com.squareup.okhttp3",
-        "version": "3.12.2"
+        "version": "3.10.0"
       }
     },
     {
@@ -1613,7 +1613,7 @@
       "artifactId": {
         "name": "okio",
         "group": "com.squareup.okio",
-        "version": "1.14.0"
+        "version": "1.15.0"
       }
     },
     {
diff --git a/build.gradle b/build.gradle
index e26d24fb5..581d0c48a 100644
--- a/build.gradle
+++ b/build.gradle
@@ -18,8 +18,8 @@ buildscript {
         classpath 'com.android.tools.build:gradle:3.4.0'
         classpath 'com.google.gms:google-services:4.2.0'
         // https://docs.fabric.io/android/changelog.html#fabric-gradle-plugin
-        classpath 'io.fabric.tools:gradle:1.27.1'
-        classpath 'com.github.ben-manes:gradle-versions-plugin:0.20.0'
+        classpath 'io.fabric.tools:gradle:1.28.1'
+        classpath 'com.github.ben-manes:gradle-versions-plugin:0.21.0'
         classpath 'com.cookpad.android.licensetools:license-tools-plugin:1.7.0'
     }
 }
diff --git a/ical4android b/ical4android
index 9648d42cf..0aa97542e 160000
--- a/ical4android
+++ b/ical4android
@@ -1 +1 @@
-Subproject commit 9648d42cf6257ca1fb46aa8f43eb9f29380acd1d
+Subproject commit 0aa97542e4b8902cfbfccc0de3a658675d499367