diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index b2244db..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,4 +0,0 @@
-language: java
-jdk:
-  - openjdk11
-
diff --git a/content-core/src/test/resources/log4j2.xml b/content-core/src/test/resources/log4j2.xml
deleted file mode 100644
index 29d4824..0000000
--- a/content-core/src/test/resources/log4j2.xml
+++ /dev/null
@@ -1,13 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<configuration status="OFF">
-    <appenders>
-        <Console name="Console" target="SYSTEM_OUT">
-            <PatternLayout pattern="[%d{ABSOLUTE}][%-5p][%-25c][%t] %m%n"/>
-        </Console>
-    </appenders>
-    <Loggers>
-        <Root level="info">
-            <AppenderRef ref="Console"/>
-        </Root>
-    </Loggers>
-</configuration>
\ No newline at end of file
diff --git a/content-json/src/test/resources/log4j2.xml b/content-json/src/test/resources/log4j2.xml
deleted file mode 100644
index f71aced..0000000
--- a/content-json/src/test/resources/log4j2.xml
+++ /dev/null
@@ -1,13 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<configuration status="OFF">
-    <appenders>
-        <Console name="Console" target="SYSTEM_OUT">
-            <PatternLayout pattern="[%d{ABSOLUTE}][%-5p][%-25c][%t] %m%n"/>
-        </Console>
-    </appenders>
-    <Loggers>
-        <Root level="info">
-            <AppenderRef ref="Console" />
-        </Root>
-    </Loggers>
-</configuration>
\ No newline at end of file
diff --git a/content-rdf/src/test/resources/log4j2.xml b/content-rdf/src/test/resources/log4j2.xml
deleted file mode 100644
index b175dfc..0000000
--- a/content-rdf/src/test/resources/log4j2.xml
+++ /dev/null
@@ -1,13 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<configuration status="OFF">
-    <appenders>
-        <Console name="Console" target="SYSTEM_OUT">
-            <PatternLayout pattern="[%d{ABSOLUTE}][%-5p][%-25c][%t] %m%n"/>
-        </Console>
-    </appenders>
-    <Loggers>
-        <Root level="debug">
-            <AppenderRef ref="Console" />
-        </Root>
-    </Loggers>
-</configuration>
\ No newline at end of file
diff --git a/gradle.properties b/gradle.properties
index 0aa288e..da69b6b 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,12 +1,13 @@
 group = org.xbib
 name = content
-version = 2.6.5
+version = 2.6.6
 
 gradle.wrapper.version = 6.6.1
-xbib.net.version = 2.1.0
-xbib-datastructures-tiny.version = 0.0.3
+
+xbib.net.version = 2.1.1
+xbib-datastructures-tiny.version = 0.1.0
 jackson.version = 2.11.4
-woodstox.version = 6.2.1
-snakeyaml.version = 1.27
-mockito.version = 3.5.13
+woodstox.version = 6.2.6
+snakeyaml.version = 1.28
+mockito.version = 3.10.0
 asciidoclet.version = 1.5.6