diff --git a/app/build.gradle b/app/build.gradle
index 27e8e939..0aa69323 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -58,7 +58,7 @@ dependencies {
     compile 'dnsjava:dnsjava:2.1.7'
     compile 'org.apache.commons:commons-lang3:3.4'
     provided 'org.projectlombok:lombok:1.16.6'
-    compile('org.slf4j:slf4j-android:1.7.12')
+    compile('org.slf4j:slf4j-android:1.7.13')
 
     compile project(':dav4android')
     compile project(':ical4android')
@@ -66,5 +66,5 @@ dependencies {
 
     compile project(':MemorizingTrustManager')
 
-    androidTestCompile 'com.squareup.okhttp:mockwebserver:2.6.0-SNAPSHOT'
+    androidTestCompile 'com.squareup.okhttp:mockwebserver:2.6.0'
 }
diff --git a/dav4android b/dav4android
index b77404b8..ea03135d 160000
--- a/dav4android
+++ b/dav4android
@@ -1 +1 @@
-Subproject commit b77404b82c6bae193754344ecb00b7e4be88797f
+Subproject commit ea03135d7dd194832fdcc8b47bd041b87d918edb
diff --git a/ical4android b/ical4android
index 78ad167a..7df1b515 160000
--- a/ical4android
+++ b/ical4android
@@ -1 +1 @@
-Subproject commit 78ad167afdb3a181753bab4f68aa0a47cf0db25b
+Subproject commit 7df1b5156073fda73ac36117189acbaa8a5ce2f0
diff --git a/vcard4android b/vcard4android
index 2fd2e95a..c59c7b4e 160000
--- a/vcard4android
+++ b/vcard4android
@@ -1 +1 @@
-Subproject commit 2fd2e95ae66a43b47d6e4139146521e33f1e4f5e
+Subproject commit c59c7b4e65e431d7c3ca554cdab9b7ff065e914c