diff --git a/.classpath b/.classpath
index ada5846c4..eb79695d5 100644
--- a/.classpath
+++ b/.classpath
@@ -28,9 +28,9 @@
 	<classpathentry kind="lib" path="lib/commons-lang-2.6.jar"/>
 	<classpathentry kind="lib" path="lib/jaudiotagger-2.0.4-20111207.115108-15.jar"/>
 	<classpathentry kind="lib" path="lib/commons-codec-1.10.jar"/>
-	<classpathentry kind="lib" path="lib/jcl-over-slf4j-1.7.12.jar"/>
-	<classpathentry kind="lib" path="lib/slf4j-jdk14-1.7.12.jar"/>
-	<classpathentry kind="lib" path="lib/log4j-over-slf4j-1.7.12.jar"/>
+	<classpathentry kind="lib" path="lib/jcl-over-slf4j-1.7.13.jar"/>
+	<classpathentry kind="lib" path="lib/slf4j-jdk14-1.7.13.jar"/>
+	<classpathentry kind="lib" path="lib/log4j-over-slf4j-1.7.13.jar"/>
 	<classpathentry kind="lib" path="lib/httpcore-4.4.4.jar"/>
 	<classpathentry kind="lib" path="lib/metadata-extractor-2.8.1.jar"/>
 	<classpathentry kind="lib" path="lib/xmpcore-5.1.2.jar"/>
@@ -47,7 +47,7 @@
 	<classpathentry kind="lib" path="lib/poi-3.13-20150929.jar"/>
 	<classpathentry kind="lib" path="lib/poi-scratchpad-3.13-20150929.jar"/>
 	<classpathentry kind="lib" path="lib/commons-io-2.4.jar"/>
-	<classpathentry kind="lib" path="lib/slf4j-api-1.7.12.jar"/>
+	<classpathentry kind="lib" path="lib/slf4j-api-1.7.13.jar"/>
 	<classpathentry kind="lib" path="lib/chardet.jar"/>
 	<classpathentry kind="lib" path="lib/jetty-client-9.2.14.v20151106.jar"/>
 	<classpathentry kind="lib" path="lib/jetty-continuation-9.2.14.v20151106.jar"/>
diff --git a/build.xml b/build.xml
index e106297dc..ed1f6ddc3 100644
--- a/build.xml
+++ b/build.xml
@@ -190,7 +190,7 @@
     	<pathelement location="${lib}/jaudiotagger-2.0.4-20111207.115108-15.jar" />
         <pathelement location="${lib}/javax.servlet-api-3.1.0.jar" />
     	<pathelement location="${lib}/jcifs-1.3.17.jar" />
-    	<pathelement location="${lib}/jcl-over-slf4j-1.7.12.jar" />
+    	<pathelement location="${lib}/jcl-over-slf4j-1.7.13.jar" />
     	<pathelement location="${lib}/jempbox-1.8.10.jar" />
         <pathelement location="${lib}/jetty-client-9.2.14.v20151106.jar" />
         <pathelement location="${lib}/jetty-continuation-9.2.14.v20151106.jar" />
@@ -209,7 +209,7 @@
     	<pathelement location="${lib}/jsch-0.1.53.jar" />
     	<pathelement location="${lib}/json-simple-1.1.1.jar" />
     	<pathelement location="${lib}/jsoup-1.8.3.jar" />
-    	<pathelement location="${lib}/log4j-over-slf4j-1.7.12.jar" />
+    	<pathelement location="${lib}/log4j-over-slf4j-1.7.13.jar" />
     	<pathelement location="${lib}/lucene-analyzers-common-5.3.1.jar" />
     	<pathelement location="${lib}/lucene-analyzers-phonetic-5.3.1.jar" />
     	<pathelement location="${lib}/lucene-backward-codecs-5.3.1.jar" />
@@ -232,8 +232,8 @@
         <pathelement location="${lib}/pdfbox-1.8.10.jar" />
     	<pathelement location="${lib}/poi-3.13-20150929.jar" />
     	<pathelement location="${lib}/poi-scratchpad-3.13-20150929.jar" />
-        <pathelement location="${lib}/slf4j-api-1.7.12.jar" />
-        <pathelement location="${lib}/slf4j-jdk14-1.7.12.jar" />
+        <pathelement location="${lib}/slf4j-api-1.7.13.jar" />
+        <pathelement location="${lib}/slf4j-jdk14-1.7.13.jar" />
         <pathelement location="${lib}/solr-core-5.3.1.jar" />
         <pathelement location="${lib}/solr-solrj-5.3.1.jar" />
     	<pathelement location="${lib}/spatial4j-0.4.1.jar" />
diff --git a/lib/jcl-over-slf4j-1.7.12.jar b/lib/jcl-over-slf4j-1.7.13.jar
similarity index 52%
rename from lib/jcl-over-slf4j-1.7.12.jar
rename to lib/jcl-over-slf4j-1.7.13.jar
index 2030a7037..496994649 100644
Binary files a/lib/jcl-over-slf4j-1.7.12.jar and b/lib/jcl-over-slf4j-1.7.13.jar differ
diff --git a/lib/log4j-over-slf4j-1.7.12.jar b/lib/log4j-over-slf4j-1.7.13.jar
similarity index 60%
rename from lib/log4j-over-slf4j-1.7.12.jar
rename to lib/log4j-over-slf4j-1.7.13.jar
index fd3f48c81..d1346910b 100644
Binary files a/lib/log4j-over-slf4j-1.7.12.jar and b/lib/log4j-over-slf4j-1.7.13.jar differ
diff --git a/lib/slf4j-LICENSE.txt b/lib/slf4j-LICENSE.txt
index f5ecafa00..5d3a83bd5 100644
--- a/lib/slf4j-LICENSE.txt
+++ b/lib/slf4j-LICENSE.txt
@@ -1,21 +1,24 @@
-Copyright (c) 2004-2008 QOS.ch
-All rights reserved.
-
-Permission is hereby granted, free  of charge, to any person obtaining
-a  copy  of this  software  and  associated  documentation files  (the
-"Software"), to  deal in  the Software without  restriction, including
-without limitation  the rights to  use, copy, modify,  merge, publish,
-distribute,  sublicense, and/or sell  copies of  the Software,  and to
-permit persons to whom the Software  is furnished to do so, subject to
-the following conditions:
-
-The  above  copyright  notice  and  this permission  notice  shall  be
-included in all copies or substantial portions of the Software.
-
-THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
-EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
-MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+Copyright (c) 2004-2014 QOS.ch
+All rights reserved.
+
+Permission is hereby granted, free  of charge, to any person obtaining
+a  copy  of this  software  and  associated  documentation files  (the
+"Software"), to  deal in  the Software without  restriction, including
+without limitation  the rights to  use, copy, modify,  merge, publish,
+distribute,  sublicense, and/or sell  copies of  the Software,  and to
+permit persons to whom the Software  is furnished to do so, subject to
+the following conditions:
+
+The  above  copyright  notice  and  this permission  notice  shall  be
+included in all copies or substantial portions of the Software.
+
+THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
+EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
+MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
+
diff --git a/lib/slf4j-api-1.7.12.jar b/lib/slf4j-api-1.7.12.jar
deleted file mode 100644
index e357ddc7f..000000000
Binary files a/lib/slf4j-api-1.7.12.jar and /dev/null differ
diff --git a/lib/slf4j-api-1.7.13.jar b/lib/slf4j-api-1.7.13.jar
new file mode 100644
index 000000000..4dfaaa8ce
Binary files /dev/null and b/lib/slf4j-api-1.7.13.jar differ
diff --git a/lib/slf4j-jdk14-1.7.12.jar b/lib/slf4j-jdk14-1.7.12.jar
deleted file mode 100644
index cf078f810..000000000
Binary files a/lib/slf4j-jdk14-1.7.12.jar and /dev/null differ
diff --git a/lib/slf4j-jdk14-1.7.13.jar b/lib/slf4j-jdk14-1.7.13.jar
new file mode 100644
index 000000000..b31b2008b
Binary files /dev/null and b/lib/slf4j-jdk14-1.7.13.jar differ
diff --git a/nbproject/project.xml b/nbproject/project.xml
index f26040de2..8913367df 100644
--- a/nbproject/project.xml
+++ b/nbproject/project.xml
@@ -83,7 +83,7 @@
             <compilation-unit>
                 <package-root>source</package-root>
                 <package-root>htroot</package-root>
-                <classpath mode="compile">lib/J7Zip-modified.jar;lib/apache-mime4j-0.6.jar;lib/bcmail-jdk15-1.46.jar;lib/bcprov-jdk15-1.46.jar;lib/chardet.jar;lib/common-image-3.2.jar;lib/common-io-3.2.jar;lib/common-lang-3.2.jar;lib/commons-codec-1.10.jar;lib/commons-compress-1.10.jar;lib/commons-fileupload-1.3.1.jar;lib/commons-io-2.4.jar;lib/commons-jxpath-1.3.jar;lib/commons-lang-2.6.jar;lib/commons-logging-1.2.jar;lib/fontbox-1.8.10.jar;lib/guava-18.0.jar;lib/htmllexer.jar;lib/httpclient-4.5.1.jar;lib/httpcore-4.4.4.jar;lib/httpmime-4.5.1.jar;lib/icu4j-56_1.jar;lib/imageio-core-3.2.jar;lib/imageio-metadata-3.2.jar;lib/imageio-tiff-3.2.jar;lib/jakarta-oro-2.0.8.jar;lib/jaudiotagger-2.0.4-20111207.115108-15.jar;lib/javax.servlet-api-3.1.0.jar;lib/jcifs-1.3.17.jar;lib/jcl-over-slf4j-1.7.12.jar;lib/jempbox-1.8.10.jar;lib/jetty-client-9.2.14.v20151106.jar;lib/jetty-continuation-9.2.14.v20151106.jar;lib/jetty-deploy-9.2.14.v20151106.jar;lib/jetty-http-9.2.14.v20151106.jar;lib/jetty-io-9.2.14.v20151106.jar;lib/jetty-jmx-9.2.14.v20151106.jar;lib/jetty-proxy-9.2.14.v20151106.jar;lib/jetty-security-9.2.14.v20151106.jar;lib/jetty-server-9.2.14.v20151106.jar;lib/jetty-servlet-9.2.14.v20151106.jar;lib/jetty-servlets-9.2.14.v20151106.jar;lib/jetty-util-9.2.14.v20151106.jar;lib/jetty-webapp-9.2.14.v20151106.jar;lib/jetty-xml-9.2.14.v20151106.jar;lib/jsch-0.1.53.jar;lib/json-simple-1.1.1.jar;lib/jsoup-1.8.3.jar;lib/log4j-over-slf4j-1.7.12.jar;lib/lucene-analyzers-common-5.3.1.jar;lib/lucene-analyzers-phonetic-5.3.1.jar;lib/lucene-backward-codecs-5.3.1.jar;lib/lucene-classification-5.3.1.jar;lib/lucene-codecs-5.3.1.jar;lib/lucene-core-5.3.1.jar;lib/lucene-facet-5.3.1.jar;lib/lucene-grouping-5.3.1.jar;lib/lucene-highlighter-5.3.1.jar;lib/lucene-join-5.3.1.jar;lib/lucene-memory-5.3.1.jar;lib/lucene-misc-5.3.1.jar;lib/lucene-queries-5.3.1.jar;lib/lucene-queryparser-5.3.1.jar;lib/lucene-spatial-5.3.1.jar;lib/lucene-suggest-5.3.1.jar;lib/metadata-extractor-2.8.1.jar;lib/noggit-0.6.jar;lib/org.restlet.jar;lib/pdfbox-1.8.10.jar;lib/poi-3.13-20150929.jar;lib/poi-scratchpad-3.13-20150929.jar;lib/slf4j-api-1.7.12.jar;lib/slf4j-jdk14-1.7.12.jar;lib/solr-core-5.3.1.jar;lib/solr-solrj-5.3.1.jar;lib/spatial4j-0.4.1.jar;lib/stax2-api-3.1.4.jar;lib/webcat-0.1-swf.jar;lib/weupnp-0.1.3.jar;lib/woodstox-core-asl-4.4.1.jar;lib/xercesImpl.jar;lib/xml-apis.jar;lib/xmpcore-5.1.2.jar;lib/zookeeper-3.4.6.jar</classpath>
+                <classpath mode="compile">lib/J7Zip-modified.jar;lib/apache-mime4j-0.6.jar;lib/bcmail-jdk15-1.46.jar;lib/bcprov-jdk15-1.46.jar;lib/chardet.jar;lib/common-image-3.2.jar;lib/common-io-3.2.jar;lib/common-lang-3.2.jar;lib/commons-codec-1.10.jar;lib/commons-compress-1.10.jar;lib/commons-fileupload-1.3.1.jar;lib/commons-io-2.4.jar;lib/commons-jxpath-1.3.jar;lib/commons-lang-2.6.jar;lib/commons-logging-1.2.jar;lib/fontbox-1.8.10.jar;lib/guava-18.0.jar;lib/htmllexer.jar;lib/httpclient-4.5.1.jar;lib/httpcore-4.4.4.jar;lib/httpmime-4.5.1.jar;lib/icu4j-56_1.jar;lib/imageio-core-3.2.jar;lib/imageio-metadata-3.2.jar;lib/imageio-tiff-3.2.jar;lib/jakarta-oro-2.0.8.jar;lib/jaudiotagger-2.0.4-20111207.115108-15.jar;lib/javax.servlet-api-3.1.0.jar;lib/jcifs-1.3.17.jar;lib/jcl-over-slf4j-1.7.13.jar;lib/jempbox-1.8.10.jar;lib/jetty-client-9.2.14.v20151106.jar;lib/jetty-continuation-9.2.14.v20151106.jar;lib/jetty-deploy-9.2.14.v20151106.jar;lib/jetty-http-9.2.14.v20151106.jar;lib/jetty-io-9.2.14.v20151106.jar;lib/jetty-jmx-9.2.14.v20151106.jar;lib/jetty-proxy-9.2.14.v20151106.jar;lib/jetty-security-9.2.14.v20151106.jar;lib/jetty-server-9.2.14.v20151106.jar;lib/jetty-servlet-9.2.14.v20151106.jar;lib/jetty-servlets-9.2.14.v20151106.jar;lib/jetty-util-9.2.14.v20151106.jar;lib/jetty-webapp-9.2.14.v20151106.jar;lib/jetty-xml-9.2.14.v20151106.jar;lib/jsch-0.1.53.jar;lib/json-simple-1.1.1.jar;lib/jsoup-1.8.3.jar;lib/log4j-over-slf4j-1.7.13.jar;lib/lucene-analyzers-common-5.3.1.jar;lib/lucene-analyzers-phonetic-5.3.1.jar;lib/lucene-backward-codecs-5.3.1.jar;lib/lucene-classification-5.3.1.jar;lib/lucene-codecs-5.3.1.jar;lib/lucene-core-5.3.1.jar;lib/lucene-facet-5.3.1.jar;lib/lucene-grouping-5.3.1.jar;lib/lucene-highlighter-5.3.1.jar;lib/lucene-join-5.3.1.jar;lib/lucene-memory-5.3.1.jar;lib/lucene-misc-5.3.1.jar;lib/lucene-queries-5.3.1.jar;lib/lucene-queryparser-5.3.1.jar;lib/lucene-spatial-5.3.1.jar;lib/lucene-suggest-5.3.1.jar;lib/metadata-extractor-2.8.1.jar;lib/noggit-0.6.jar;lib/org.restlet.jar;lib/pdfbox-1.8.10.jar;lib/poi-3.13-20150929.jar;lib/poi-scratchpad-3.13-20150929.jar;lib/slf4j-api-1.7.13.jar;lib/slf4j-jdk14-1.7.13.jar;lib/solr-core-5.3.1.jar;lib/solr-solrj-5.3.1.jar;lib/spatial4j-0.4.1.jar;lib/stax2-api-3.1.4.jar;lib/webcat-0.1-swf.jar;lib/weupnp-0.1.3.jar;lib/woodstox-core-asl-4.4.1.jar;lib/xercesImpl.jar;lib/xml-apis.jar;lib/xmpcore-5.1.2.jar;lib/zookeeper-3.4.6.jar</classpath>
                 <built-to>lib/yacycore.jar</built-to>
                 <source-level>1.7</source-level>
             </compilation-unit>
diff --git a/pom.xml b/pom.xml
index 2ca876b64..baa8f332e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -453,7 +453,7 @@
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>jcl-over-slf4j</artifactId>
-            <version>1.7.12</version>
+            <version>1.7.13</version>
         </dependency>
         <dependency>
             <groupId>org.apache.pdfbox</groupId>
@@ -478,7 +478,7 @@
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>log4j-over-slf4j</artifactId>
-            <version>1.7.12</version>
+            <version>1.7.13</version>
         </dependency>
         <dependency>
             <groupId>org.apache.lucene</groupId>
@@ -518,12 +518,12 @@
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-api</artifactId>
-            <version>1.7.12</version>
+            <version>1.7.13</version>
         </dependency>
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-jdk14</artifactId>
-            <version>1.7.12</version>
+            <version>1.7.13</version>
         </dependency>
         <dependency>
             <groupId>org.apache.solr</groupId>