diff --git a/build.gradle b/build.gradle
index acd5310..3ec9fd8 100644
--- a/build.gradle
+++ b/build.gradle
@@ -2,7 +2,7 @@ import java.time.ZonedDateTime
 import java.time.format.DateTimeFormatter
 
 plugins {
-    id "com.github.spotbugs" version "1.6.2"
+    id "com.github.spotbugs" version "1.6.5"
     id "org.sonarqube" version "2.6.1"
     id "io.codearte.nexus-staging" version "0.11.0"
     id "org.xbib.gradle.plugin.asciidoctor" version "1.5.6.0.1"
diff --git a/gradle.properties b/gradle.properties
index 6a6794b..0c72e9d 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,16 +1,16 @@
 group = org.xbib
 name = netty-http
-version = 4.1.28.0
+version = 4.1.30.0
 
-netty.version = 4.1.28.Final
-tcnative.version = 2.0.7.Final
+netty.version = 4.1.30.Final
+tcnative.version = 2.0.19.Final
 bouncycastle.version = 1.60
-conscrypt.version = 1.0.1
-xbib-net-url.version = 1.1.1
-alpnagent.version = 2.0.7
+xbib-net-url.version = 1.1.3
+alpnagent.version = 2.0.9
 
-# test
+# tests /docs
 junit.version = 4.12
+conscrypt.version = 1.0.1
 jackson.version = 2.8.11.1
 wagon.version = 3.0.0
 asciidoclet.version = 1.5.4
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 0d4a951..29953ea 100644
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index b67edd5..bfb8348 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Fri Aug 17 10:24:58 CEST 2018
+#Tue Nov 13 10:38:26 CET 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.9-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.2-all.zip
diff --git a/netty-http-client/build.gradle b/netty-http-client/build.gradle
index 58acf08..2851f2d 100644
--- a/netty-http-client/build.gradle
+++ b/netty-http-client/build.gradle
@@ -3,6 +3,7 @@ dependencies {
     compile project(":netty-http-common")
     compile "io.netty:netty-handler-proxy:${project.property('netty.version')}"
     compile "io.netty:netty-transport-native-epoll:${project.property('netty.version')}"
+
     testCompile "io.netty:netty-tcnative-boringssl-static:${project.property('tcnative.version')}"
     testCompile "org.conscrypt:conscrypt-openjdk-uber:${project.property('conscrypt.version')}"
     testCompile "junit:junit:${project.property('junit.version')}"
diff --git a/netty-http-client/src/main/java/org/xbib/netty/http/client/RequestBuilder.java b/netty-http-client/src/main/java/org/xbib/netty/http/client/RequestBuilder.java
index 39070d9..95da7e4 100644
--- a/netty-http-client/src/main/java/org/xbib/netty/http/client/RequestBuilder.java
+++ b/netty-http-client/src/main/java/org/xbib/netty/http/client/RequestBuilder.java
@@ -20,8 +20,11 @@ import org.xbib.net.URLSyntaxException;
 import org.xbib.netty.http.client.retry.BackOff;
 import org.xbib.netty.http.common.HttpAddress;
 
+import java.net.MalformedURLException;
 import java.net.URI;
+import java.nio.charset.MalformedInputException;
 import java.nio.charset.StandardCharsets;
+import java.nio.charset.UnmappableCharacterException;
 import java.time.ZoneOffset;
 import java.time.ZonedDateTime;
 import java.time.format.DateTimeFormatter;
@@ -277,7 +280,7 @@ public class RequestBuilder {
         if (uri != null) {
             try {
                 url = URL.base(url).resolve(uri);
-            } catch (URLSyntaxException e) {
+            } catch (URLSyntaxException | MalformedInputException | UnmappableCharacterException e) {
                 throw new IllegalArgumentException(e);
             }
         }
diff --git a/netty-http-server/build.gradle b/netty-http-server/build.gradle
index 6b3ad15..f6bccee 100644
--- a/netty-http-server/build.gradle
+++ b/netty-http-server/build.gradle
@@ -4,6 +4,7 @@ dependencies {
     compile "io.netty:netty-transport-native-epoll:${project.property('netty.version')}"
     compile "io.netty:netty-tcnative-boringssl-static:${project.property('tcnative.version')}"
     compile "org.bouncycastle:bcpkix-jdk15on:${project.property('bouncycastle.version')}"
+
     testCompile project(":netty-http-client")
     testCompile "junit:junit:${project.property('junit.version')}"
 }