diff --git a/pom.xml b/pom.xml
index 18121ce..a4d6fe7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -13,13 +13,13 @@
         <junit.version>4.12</junit.version>
         <commons.lang.version>3.4</commons.lang.version>
         <guava.version>19.0</guava.version>
-        <httpclient.version>4.4</httpclient.version>
+        <httpclient.version>4.5.13</httpclient.version>
         <servlet.api.version>3.1.0</servlet.api.version>
         <slf4j.log4j.version>1.6.1</slf4j.log4j.version>
         <jackson.version>2.8.11.3</jackson.version>
         <jstl.version>1.2</jstl.version>
         <jsoup.version>1.9.2</jsoup.version>
-        <xstream.version>1.4.8</xstream.version>
+        <xstream.version>1.4.18</xstream.version>
         <dom4j.version>1.6.1</dom4j.version>
         <jedis.version>2.8.1</jedis.version>
         <lombok.version>1.16.16</lombok.version>