diff --git a/hmac-auth-proxy/build.gradle b/hmac-auth-proxy/build.gradle
index c6fed76..5603e62 100644
--- a/hmac-auth-proxy/build.gradle
+++ b/hmac-auth-proxy/build.gradle
@@ -13,7 +13,7 @@ dependencies {
     compile 'com.sun.jersey:jersey-grizzly2:1.19.4'
     compile 'javax.xml.bind:jaxb-api:2.4.0-b180830.0359'
     compile 'com.sun.xml.bind:jaxb-impl:4.0.1'
-    compile 'com.sun.xml.bind:jaxb-core:3.0.2'
+    compile 'com.sun.xml.bind:jaxb-core:4.0.1'
     compile 'javax.activation:activation:1.1.1'
     compile 'com.beust:jcommander:1.82'