diff --git a/build.gradle b/build.gradle
index 581d0c48a..12fc35b0c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -15,7 +15,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.4.0'
+        classpath 'com.android.tools.build:gradle:3.4.1'
         classpath 'com.google.gms:google-services:4.2.0'
         // https://docs.fabric.io/android/changelog.html#fabric-gradle-plugin
         classpath 'io.fabric.tools:gradle:1.28.1'
diff --git a/dav4android b/dav4android
index d7c8d849c..ce20774b0 160000
--- a/dav4android
+++ b/dav4android
@@ -1 +1 @@
-Subproject commit d7c8d849c0a2b75387e5acdfe488e8392b4037b6
+Subproject commit ce20774b04d3fe6f7632d2f265df580e2d4dd987
diff --git a/ical4android b/ical4android
index 0aa97542e..491a10392 160000
--- a/ical4android
+++ b/ical4android
@@ -1 +1 @@
-Subproject commit 0aa97542e4b8902cfbfccc0de3a658675d499367
+Subproject commit 491a1039228cf3e6ca6fc2222355f76a9649d953