diff --git a/lib/webmagic-core-0.5.0.jar b/lib/webmagic-core-0.5.0.jar
deleted file mode 100644
index 9c26452..0000000
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diff --git a/lib/webmagic-core-0.5.1.jar b/lib/webmagic-core-0.5.1.jar
new file mode 100644
index 0000000..ce9385a
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diff --git a/lib/webmagic-extension-0.5.0.jar b/lib/webmagic-extension-0.5.1.jar
similarity index 54%
rename from lib/webmagic-extension-0.5.0.jar
rename to lib/webmagic-extension-0.5.1.jar
index 91c9df1..982259f 100644
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