diff --git a/build.gradle b/build.gradle
index 0f35256..1eeb0fc 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,7 +1,7 @@
 plugins {
-    id "com.github.spotbugs" version "2.0.0"
-    id "org.sonarqube" version '2.6.1'
-    id "io.codearte.nexus-staging" version "0.11.0"
+    id "com.github.spotbugs" version "2.0.1"
+    id "org.sonarqube" version '2.8'
+    id "io.codearte.nexus-staging" version "0.21.1"
 }
 
 subprojects {
@@ -40,7 +40,8 @@ subprojects {
 
     test {
         useJUnitPlatform()
-        systemProperty 'java.util.logging.config.file', project.file('src/test/resources/logging.properties')
+        systemProperty 'java.util.logging.config.file',
+                project.file('src/test/resources/logging.properties')
         failFast = false
         testLogging {
             events 'STARTED', 'PASSED', 'FAILED', 'SKIPPED'
@@ -173,10 +174,8 @@ subprojects {
             }
         }
     }
-
-    nexusStaging {
-        packageGroup = "org.xbib"
-    }
-
-
+}
+
+nexusStaging {
+    packageGroup = "org.xbib"
 }
diff --git a/gradle.properties b/gradle.properties
index 81498de..24c1628 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -2,10 +2,8 @@ group = org.xbib
 name = z3950
 version = 2.0.0
 
-netty.version = 4.1.38.Final
+netty.version = 4.1.43.Final
 xbib-cql.version = 2.0.0
 xbib-bibliographic-character-sets.version = 1.0.0
 
-junit.version = 5.5.1
-
-org.gradle.warning.mode = all
+junit.version = 5.5.2
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 393128b..0303d80 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
-#Mon Aug 12 10:34:07 CEST 2019
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.3.1-all.zip
+#Fri Nov 08 00:39:14 CET 2019
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.2-all.zip
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStorePath=wrapper/dists
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,