diff --git a/kotoed-server/pom.xml b/kotoed-server/pom.xml
index 86fe8eae..149476e7 100644
--- a/kotoed-server/pom.xml
+++ b/kotoed-server/pom.xml
@@ -57,7 +57,7 @@
 
         <diff.version>1.1.11</diff.version>
         <commons-text.version>1.7</commons-text.version>
-        <httpclient.version>4.5.9</httpclient.version>
+        <httpclient.version>4.5.13</httpclient.version>
         <web-push.version>5.0.2</web-push.version>
         <bcprov-jdk15on.version>1.62</bcprov-jdk15on.version>
         <antlr4.version>4.7.2</antlr4.version>