diff --git .checkstyle .checkstyle
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diff --git build.xml build.xml
index 39fc2a4..5f38a33 100644
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diff --git checkstyle/asf.header checkstyle/asf.header
new file mode 100644
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+++ checkstyle/asf.header
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+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); 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
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
diff --git checkstyle/checkstyle.xml checkstyle/checkstyle.xml
index 2315ad4..421fe36 100644
--- checkstyle/checkstyle.xml
+++ checkstyle/checkstyle.xml
@@ -22,8 +22,8 @@
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diff --git checkstyle/suppressions.xml checkstyle/suppressions.xml
new file mode 100644
index 0000000..3ac7731
--- /dev/null
+++ checkstyle/suppressions.xml
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diff --git ivy/libraries.properties ivy/libraries.properties
index 8293ae9..b304162 100644
--- ivy/libraries.properties
+++ ivy/libraries.properties
@@ -16,7 +16,7 @@
#These are the versions of our dependencies (in alphabetical order)
apacheant.version=1.7.1
ant-task.version=2.0.10
-checkstyle.version=4.2
+checkstyle.version=5.0
commons-cli.version=2.0
commons-codec.version=1.3
commons-collections.version=3.2.1