diff --git a/build.gradle b/build.gradle
index 635759c..2f8e691 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,21 +1,16 @@
 plugins {
-    id "org.sonarqube" version "2.6.1"
-    id "io.codearte.nexus-staging" version "0.11.0"
-    id "com.github.spotbugs" version "1.6.9"
+    id "org.sonarqube" version "2.8"
+    id "io.codearte.nexus-staging" version "0.21.1"
+    id "com.github.spotbugs" version "2.0.1"
     id "org.xbib.gradle.plugin.asciidoctor" version "1.5.6.0.1"
 }
 
-if (JavaVersion.current() < JavaVersion.VERSION_11) {
-    throw new GradleException("The build must be run with Java 11")
-}
-
 subprojects {
     apply plugin: 'java'
     apply plugin: 'maven'
-    apply plugin: 'signing'
-    apply plugin: 'com.github.spotbugs'
     apply plugin: 'pmd'
     apply plugin: 'checkstyle'
+    apply plugin: 'com.github.spotbugs'
     apply plugin: 'org.xbib.gradle.plugin.asciidoctor'
     
     configurations {
@@ -203,9 +198,8 @@ subprojects {
             }
         }
     }
+}
 
-    nexusStaging {
-        packageGroup = "org.xbib"
-    }
-
-}
\ No newline at end of file
+nexusStaging {
+    packageGroup = "org.xbib"
+}
diff --git a/gradle.properties b/gradle.properties
index 519fda6..9bb1cbb 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,17 +1,17 @@
 group = org.xbib
 name = elx
-version = 2.2.1.11
+version = 2.2.1.13
 
 # main
-xbib-metrics.version = 1.2.0
+xbib-metrics.version = 2.0.0
 xbib-guice.version = 4.0.4
-guava.version = 28.0-jre
-xbib-netty-http.version = 4.1.38.3
+xbib-netty-http.version = 4.1.43.1
 elasticsearch.version = 2.2.1
-#jackson.version = 2.6.7
-jackson.version = 2.9.9
+guava.version = 28.0-jre
+#jackson.version = 2.6.7 (original ES version)
+jackson.version = 2.9.10
 jna.version = 4.5.2
-log4j.version = 2.12.0
+log4j.version = 2.12.1
 mustache.version = 0.9.5
 jts.version = 1.13
 
@@ -20,5 +20,3 @@ junit.version = 5.5.1
 
 # docs
 asciidoclet.version = 1.5.4
-
-org.gradle.warning.mode = all
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index f3a4f28..f2ac731 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Tue Jul 23 11:33:24 CEST 2019
+#Thu Nov 07 16:18:04 CET 2019
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.2-all.zip
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.3.1-all.zip
+zipStoreBase=GRADLE_USER_HOME
diff --git a/gradlew b/gradlew
index b0d6d0a..83f2acf 100755
--- a/gradlew
+++ b/gradlew
@@ -7,7 +7,7 @@
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
-#      http://www.apache.org/licenses/LICENSE-2.0
+#      https://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
@@ -125,8 +125,8 @@ if $darwin; then
     GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
 fi
 
-# For Cygwin, switch paths to Windows format before running java
-if $cygwin ; then
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
     JAVACMD=`cygpath --unix "$JAVACMD"`
diff --git a/gradlew.bat b/gradlew.bat
index 15e1ee3..24467a1 100644
--- a/gradlew.bat
+++ b/gradlew.bat
@@ -5,7 +5,7 @@
 @rem you may not use this file except in compliance with the License.
 @rem You may obtain a copy of the License at
 @rem
-@rem      http://www.apache.org/licenses/LICENSE-2.0
+@rem      https://www.apache.org/licenses/LICENSE-2.0
 @rem
 @rem Unless required by applicable law or agreed to in writing, software
 @rem distributed under the License is distributed on an "AS IS" BASIS,