diff --git a/.classpath b/.classpath
index e110dbfad..8087d584c 100644
--- a/.classpath
+++ b/.classpath
@@ -30,7 +30,6 @@
 	<classpathentry kind="lib" path="lib/jsch-0.1.42.jar"/>
 	<classpathentry kind="lib" path="lib/jakarta-oro-2.0.8.jar"/>
 	<classpathentry kind="lib" path="lib/commons-codec-1.4.jar"/>
-	<classpathentry kind="lib" path="lib/log4j-1.2.15.jar"/>
 	<classpathentry kind="lib" path="lib/mysql-connector-java-5.1.12-bin.jar"/>
 	<classpathentry kind="lib" path="lib/jcifs-1.3.14.jar"/>
 	<classpathentry kind="lib" path="lib/metadata-extractor-2.4.0-beta-1.jar"/>
@@ -41,6 +40,7 @@
 	<classpathentry kind="lib" path="lib/fontbox-1.2.1.jar"/>
 	<classpathentry kind="lib" path="lib/pdfbox-1.2.1.jar"/>
 	<classpathentry kind="lib" path="lib/commons-fileupload-1.2.2.jar"/>
+	<classpathentry kind="lib" path="lib/log4j-1.2.16.jar"/>
 	<classpathentry kind="con" path="org.eclipse.jdt.junit.JUNIT_CONTAINER/4"/>
 	<classpathentry kind="output" path="gen"/>
 </classpath>
diff --git a/addon/YaCy.app/Contents/Info.plist b/addon/YaCy.app/Contents/Info.plist
index 01b4f2e74..40473be90 100644
--- a/addon/YaCy.app/Contents/Info.plist
+++ b/addon/YaCy.app/Contents/Info.plist
@@ -55,7 +55,7 @@
 			<string>$JAVAROOT/lib/jakarta-oro-2.0.8.jar</string>
 			<string>$JAVAROOT/lib/jcifs-1.3.14.jar</string>
 			<string>$JAVAROOT/lib/jsch-0.1.42.jar</string>
-			<string>$JAVAROOT/lib/log4j-1.2.15.jar</string>
+			<string>$JAVAROOT/lib/log4j-1.2.16.jar</string>
 			<string>$JAVAROOT/lib/metadata-extractor-2.4.0-beta-1.jar</string>
 			<string>$JAVAROOT/lib/mysql-connector-java-5.1.12-bin.jar</string>
 			<string>$JAVAROOT/lib/pdfbox-1.2.1.jar</string>
diff --git a/build.xml b/build.xml
index 504269a8a..475debc25 100644
--- a/build.xml
+++ b/build.xml
@@ -197,7 +197,7 @@
         <pathelement location="${lib}/jakarta-oro-2.0.8.jar" />
     	<pathelement location="${lib}/jcifs-1.3.14.jar" />
     	<pathelement location="${lib}/jsch-0.1.42.jar" />
-    	<pathelement location="${lib}/log4j-1.2.15.jar" />
+    	<pathelement location="${lib}/log4j-1.2.16.jar" />
     	<pathelement location="${lib}/metadata-extractor-2.4.0-beta-1.jar" />
     	<pathelement location="${lib}/mysql-connector-java-5.1.12-bin.jar" />
         <pathelement location="${lib}/pdfbox-1.2.1.jar" />
diff --git a/lib/log4j-1.2.15.jar b/lib/log4j-1.2.15.jar
deleted file mode 100644
index c930a6ab4..000000000
Binary files a/lib/log4j-1.2.15.jar and /dev/null differ
diff --git a/lib/log4j-1.2.15.License b/lib/log4j-1.2.16.License
similarity index 100%
rename from lib/log4j-1.2.15.License
rename to lib/log4j-1.2.16.License
diff --git a/lib/log4j-1.2.16.jar b/lib/log4j-1.2.16.jar
new file mode 100644
index 000000000..3f9d84761
Binary files /dev/null and b/lib/log4j-1.2.16.jar differ