diff --git a/pom.xml b/pom.xml
index d729b29..4c086c5 100644
--- a/pom.xml
+++ b/pom.xml
@@ -38,7 +38,7 @@
         <grpc.version>1.20.0</grpc.version><!-- CURRENT_GRPC_VERSION -->
         <protobuf.version>3.7.1</protobuf.version>
         <bouncycastle.version>1.61</bouncycastle.version>
-        <httpclient.version>4.5.8</httpclient.version>
+        <httpclient.version>4.5.13</httpclient.version>
         <javadoc.version>3.0.1</javadoc.version>
         <skipITs>true</skipITs>
         <alpn-boot-version>8.1.7.v20160121</alpn-boot-version>